diff --git a/consensus/XDPoS/engines/engine_v2/engine.go b/consensus/XDPoS/engines/engine_v2/engine.go
index cdce6e4189..8aa2c7f24f 100644
--- a/consensus/XDPoS/engines/engine_v2/engine.go
+++ b/consensus/XDPoS/engines/engine_v2/engine.go
@@ -590,10 +590,13 @@ func (x *XDPoS_v2) verifyHeader(chain consensus.ChainReader, header *types.Heade
 
 	// Verify this is truely a v2 block first
 
-	quorumCert, _, _, err := x.getExtraFields(header)
+	quorumCert, round, _, err := x.getExtraFields(header)
 	if err != nil {
 		return utils.ErrInvalidV2Extra
 	}
+	if round <= quorumCert.ProposedBlockInfo.Round {
+		return utils.ErrRoundInvalid
+	}
 
 	err = x.verifyQC(chain, quorumCert)
 	if err != nil {
@@ -613,6 +616,10 @@ func (x *XDPoS_v2) verifyHeader(chain consensus.ChainReader, header *types.Heade
 		return utils.ErrInvalidUncleHash
 	}
 
+	if header.Difficulty.Cmp(big.NewInt(1)) != 0 {
+		return utils.ErrInvalidDifficulty
+	}
+
 	isEpochSwitch, _, err := x.IsEpochSwitch(header) // Verify v2 block that is on the epoch switch
 	if err != nil {
 		log.Error("[verifyHeader] error when checking if header is epoch switch header", "Hash", header.Hash(), "Number", header.Number, "Error", err)
@@ -628,6 +635,7 @@ func (x *XDPoS_v2) verifyHeader(chain consensus.ChainReader, header *types.Heade
 		if len(header.Validators)%common.AddressLength != 0 {
 			return utils.ErrInvalidCheckpointSigners
 		}
+		// TODO: Add checkMasternodesOnEpochSwitch
 	} else {
 		if len(header.Validators) != 0 {
 			log.Warn("[verifyHeader] Validators shall not have values in non-epochSwitch block", "Hash", header.Hash(), "Number", header.Number, "Validators", header.Validators)
@@ -652,47 +660,54 @@ func (x *XDPoS_v2) verifyHeader(chain consensus.ChainReader, header *types.Heade
 	if parent == nil || parent.Number.Uint64() != number-1 || parent.Hash() != header.ParentHash {
 		return consensus.ErrUnknownAncestor
 	}
-	if parent.Time.Uint64()+uint64(x.config.V2.MinePeriod) > header.Time.Uint64() {
+	if parent.Number.Uint64() > x.config.V2.SwitchBlock.Uint64() && parent.Time.Uint64()+uint64(x.config.V2.MinePeriod) > header.Time.Uint64() {
 		return utils.ErrInvalidTimestamp
 	}
-	// TODO: verifySeal XIN-135
+	// TODO: item 9. check validator
+
+	_, penalties, err := x.calcMasternodes(chain, header.Number, header.ParentHash)
+	if err != nil {
+		log.Error("[verifyHeader] Fail to calculate master nodes list with penalty", "Number", header.Number, "Hash", header.Hash())
+		return err
+	}
+
+	if !utils.CompareSignersLists(common.ExtractAddressFromBytes(header.Penalties), penalties) {
+		return utils.ErrPenaltyListDoesNotMatch
+	}
 
 	x.verifiedHeaders.Add(header.Hash(), true)
 	return nil
 }
 
-// Utils for test to get current Pool size
-func (x *XDPoS_v2) GetVotePoolSize(vote *utils.Vote) int {
-	return x.votePool.Size(vote)
-}
-
-// Utils for test to get Timeout Pool Size
-func (x *XDPoS_v2) GetTimeoutPoolSize(timeout *utils.Timeout) int {
-	return x.timeoutPool.Size(timeout)
-}
-
 /*
 	SyncInfo workflow
 */
 // Verify syncInfo and trigger process QC or TC if successful
-func (x *XDPoS_v2) VerifySyncInfoMessage(chain consensus.ChainReader, syncInfo *utils.SyncInfo) error {
+func (x *XDPoS_v2) VerifySyncInfoMessage(chain consensus.ChainReader, syncInfo *utils.SyncInfo) (bool, error) {
 	/*
-		1. Verify items including:
+		1. Check QC and TC against highest QC TC. Skip if none of them need to be updated
+		2. Verify items including:
 				- verifyQC
 				- verifyTC
-		2. Broadcast(Not part of consensus)
+		3. Broadcast(Not part of consensus)
 	*/
+
+	if (x.highestQuorumCert.ProposedBlockInfo.Round >= syncInfo.HighestQuorumCert.ProposedBlockInfo.Round) && (x.highestTimeoutCert.Round >= syncInfo.HighestTimeoutCert.Round) {
+		log.Warn("[VerifySyncInfoMessage] Round from incoming syncInfo message is no longer qualified", "Highest QC Round", x.highestQuorumCert.ProposedBlockInfo.Round, "Incoming SyncInfo QC Round", syncInfo.HighestQuorumCert.ProposedBlockInfo.Round, "highestTimeoutCert Round", x.highestTimeoutCert.Round, "Incoming syncInfo TC Round", syncInfo.HighestTimeoutCert.Round)
+		return false, nil
+	}
+
 	err := x.verifyQC(chain, syncInfo.HighestQuorumCert)
 	if err != nil {
 		log.Warn("SyncInfo message verification failed due to QC", err)
-		return err
+		return false, err
 	}
 	err = x.verifyTC(chain, syncInfo.HighestTimeoutCert)
 	if err != nil {
 		log.Warn("SyncInfo message verification failed due to TC", err)
-		return err
+		return false, err
 	}
-	return nil
+	return true, nil
 }
 
 func (x *XDPoS_v2) SyncInfoHandler(chain consensus.ChainReader, syncInfo *utils.SyncInfo) error {
@@ -714,17 +729,19 @@ func (x *XDPoS_v2) SyncInfoHandler(chain consensus.ChainReader, syncInfo *utils.
 */
 func (x *XDPoS_v2) VerifyVoteMessage(chain consensus.ChainReader, vote *utils.Vote) (bool, error) {
 	/*
-		  1. Get masterNode list from snapshot
-		  2. Check signature:
+		  1. Check vote round with current round for fast fail(disqualifed)
+		  2. Get masterNode list from snapshot
+		  3. Check signature:
 					- Use ecRecover to get the public key
 					- Use the above public key to find out the xdc address
 					- Use the above xdc address to check against the master node list from step 1(For the running epoch)
 			4. Broadcast(Not part of consensus)
 	*/
-	err := x.VerifyBlockInfo(chain, vote.ProposedBlockInfo)
-	if err != nil {
-		return false, err
+	if vote.ProposedBlockInfo.Round < x.currentRound {
+		log.Warn("[VerifyVoteMessage] Disqualified vote message as the proposed round does not match currentRound", "vote.ProposedBlockInfo.Round", vote.ProposedBlockInfo.Round, "currentRound", x.currentRound)
+		return false, nil
 	}
+
 	snapshot, err := x.getSnapshot(chain, vote.ProposedBlockInfo.Number.Uint64(), false)
 	if err != nil {
 		log.Error("[VerifyVoteMessage] fail to get snapshot for a vote message", "BlockNum", vote.ProposedBlockInfo.Number, "Hash", vote.ProposedBlockInfo.Hash, "Error", err.Error())
@@ -770,7 +787,13 @@ func (x *XDPoS_v2) voteHandler(chain consensus.ChainReader, voteMsg *utils.Vote)
 			return nil
 		}
 
-		err := x.onVotePoolThresholdReached(chain, pooledVotes, voteMsg, proposedBlockHeader)
+		err := x.VerifyBlockInfo(chain, voteMsg.ProposedBlockInfo)
+		if err != nil {
+			x.votePool.ClearPoolKeyByObj(voteMsg)
+			return err
+		}
+
+		err = x.onVotePoolThresholdReached(chain, pooledVotes, voteMsg, proposedBlockHeader)
 		if err != nil {
 			return err
 		}
@@ -1487,41 +1510,6 @@ func (x *XDPoS_v2) isExtendingFromAncestor(blockChainReader consensus.ChainReade
 	return false, nil
 }
 
-/*
-	Testing tools
-*/
-
-func (x *XDPoS_v2) SetNewRoundFaker(blockChainReader consensus.ChainReader, newRound utils.Round, resetTimer bool) {
-	x.lock.Lock()
-	defer x.lock.Unlock()
-	// Reset a bunch of things
-	if resetTimer {
-		x.timeoutWorker.Reset(blockChainReader)
-	}
-	x.currentRound = newRound
-}
-
-// for test only
-func (x *XDPoS_v2) ProcessQC(chain consensus.ChainReader, qc *utils.QuorumCert) error {
-	x.lock.Lock()
-	defer x.lock.Unlock()
-	return x.processQC(chain, qc)
-}
-
-// Utils for test to check currentRound value
-func (x *XDPoS_v2) GetCurrentRound() utils.Round {
-	x.lock.RLock()
-	defer x.lock.RUnlock()
-	return x.currentRound
-}
-
-// Utils for test to check currentRound value
-func (x *XDPoS_v2) GetProperties() (utils.Round, *utils.QuorumCert, *utils.QuorumCert, utils.Round, *utils.BlockInfo) {
-	x.lock.RLock()
-	defer x.lock.RUnlock()
-	return x.currentRound, x.lockQuorumCert, x.highestQuorumCert, x.highestVotedRound, x.highestCommitBlock
-}
-
 // Get master nodes over extra data of epoch switch block.
 func (x *XDPoS_v2) GetMasternodesFromEpochSwitchHeader(epochSwitchHeader *types.Header) []common.Address {
 	if epochSwitchHeader == nil {
@@ -1539,7 +1527,7 @@ func (x *XDPoS_v2) GetMasternodesFromEpochSwitchHeader(epochSwitchHeader *types.
 func (x *XDPoS_v2) IsEpochSwitch(header *types.Header) (bool, uint64, error) {
 	// Return true directly if we are examing the last v1 block. This could happen if the calling function is examing parent block
 	if header.Number.Cmp(x.config.V2.SwitchBlock) == 0 {
-		log.Info("[IsEpochSwitch] examing last v1 block 👯‍♂️")
+		log.Info("[IsEpochSwitch] examing last v1 block")
 		return true, header.Number.Uint64() / x.config.Epoch, nil
 	}
 
diff --git a/consensus/XDPoS/engines/engine_v2/testing_utils.go b/consensus/XDPoS/engines/engine_v2/testing_utils.go
new file mode 100644
index 0000000000..f3edef19b1
--- /dev/null
+++ b/consensus/XDPoS/engines/engine_v2/testing_utils.go
@@ -0,0 +1,59 @@
+package engine_v2
+
+import (
+	"github.com/XinFinOrg/XDPoSChain/consensus"
+	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS/utils"
+)
+
+/*
+	Testing tools
+*/
+
+func (x *XDPoS_v2) SetNewRoundFaker(blockChainReader consensus.ChainReader, newRound utils.Round, resetTimer bool) {
+	x.lock.Lock()
+	defer x.lock.Unlock()
+	// Reset a bunch of things
+	if resetTimer {
+		x.timeoutWorker.Reset(blockChainReader)
+	}
+	x.currentRound = newRound
+}
+
+// for test only
+func (x *XDPoS_v2) ProcessQCFaker(chain consensus.ChainReader, qc *utils.QuorumCert) error {
+	x.lock.Lock()
+	defer x.lock.Unlock()
+	return x.processQC(chain, qc)
+}
+
+// Utils for test to check currentRound value
+func (x *XDPoS_v2) GetCurrentRoundFaker() utils.Round {
+	x.lock.RLock()
+	defer x.lock.RUnlock()
+	return x.currentRound
+}
+
+// Utils for test to get current Pool size
+func (x *XDPoS_v2) GetVotePoolSizeFaker(vote *utils.Vote) int {
+	return x.votePool.Size(vote)
+}
+
+// Utils for test to get Timeout Pool Size
+func (x *XDPoS_v2) GetTimeoutPoolSizeFaker(timeout *utils.Timeout) int {
+	return x.timeoutPool.Size(timeout)
+}
+
+// WARN: This function is designed for testing purpose only!
+// Utils for test to check currentRound values
+func (x *XDPoS_v2) GetPropertiesFaker() (utils.Round, *utils.QuorumCert, *utils.QuorumCert, *utils.TimeoutCert, utils.Round, *utils.BlockInfo) {
+	x.lock.RLock()
+	defer x.lock.RUnlock()
+	return x.currentRound, x.lockQuorumCert, x.highestQuorumCert, x.highestTimeoutCert, x.highestVotedRound, x.highestCommitBlock
+}
+
+// WARN: This function is designed for testing purpose only!
+// Utils for tests to set engine specific values
+func (x *XDPoS_v2) SetPropertiesFaker(highestQC *utils.QuorumCert, highestTC *utils.TimeoutCert) {
+	x.highestQuorumCert = highestQC
+	x.highestTimeoutCert = highestTC
+}
diff --git a/consensus/XDPoS/utils/errors.go b/consensus/XDPoS/utils/errors.go
index f643cd992a..34e1f06af4 100644
--- a/consensus/XDPoS/utils/errors.go
+++ b/consensus/XDPoS/utils/errors.go
@@ -85,6 +85,9 @@ var (
 	ErrInvalidTC                    = errors.New("Invalid TC content")
 	ErrEmptyBlockInfoHash           = errors.New("BlockInfo hash is empty")
 	ErrInvalidFieldInNonEpochSwitch = errors.New("Invalid field exist in a non-epoch swtich block")
+
+	ErrPenaltyListDoesNotMatch = errors.New("Incoming block penalty list does not match")
+	ErrRoundInvalid            = errors.New("Invalid Round, it shall be bigger than QC round")
 )
 
 type ErrIncomingMessageRoundNotEqualCurrentRound struct {
diff --git a/consensus/tests/initial_test.go b/consensus/tests/initial_test.go
index 7f6c733f0f..9e114d3fdd 100644
--- a/consensus/tests/initial_test.go
+++ b/consensus/tests/initial_test.go
@@ -24,7 +24,7 @@ func TestInitialFirstV2Blcok(t *testing.T) {
 	err := adaptor.EngineV2.Initial(blockchain, header)
 	assert.Nil(t, err)
 
-	round, _, highQC, _, _ := adaptor.EngineV2.GetProperties()
+	round, _, highQC, _, _, _ := adaptor.EngineV2.GetPropertiesFaker()
 	blockInfo := &utils.BlockInfo{
 		Hash:   header.Hash(),
 		Round:  utils.Round(0),
@@ -98,7 +98,7 @@ func TestInitialOtherV2Block(t *testing.T) {
 	err = adaptor.EngineV2.Initial(blockchain, block.Header())
 	assert.Nil(t, err)
 
-	round, _, highQC, _, _ := adaptor.EngineV2.GetProperties()
+	round, _, highQC, _, _, _ := adaptor.EngineV2.GetPropertiesFaker()
 	expectedQuorumCert := &utils.QuorumCert{
 		ProposedBlockInfo: blockInfo,
 		Signatures:        []utils.Signature{},
diff --git a/consensus/tests/mine_test.go b/consensus/tests/mine_test.go
index a49590858a..bdb9e4c19b 100644
--- a/consensus/tests/mine_test.go
+++ b/consensus/tests/mine_test.go
@@ -47,7 +47,7 @@ func TestYourTurnInitialV2(t *testing.T) {
 	assert.Nil(t, err)
 	// round=1, so masternode[1] has YourTurn = True
 	assert.True(t, b)
-	assert.Equal(t, adaptor.EngineV2.GetCurrentRound(), utils.Round(1))
+	assert.Equal(t, adaptor.EngineV2.GetCurrentRoundFaker(), utils.Round(1))
 
 	snap, err := adaptor.EngineV2.GetSnapshot(blockchain, block900.Header())
 	assert.Nil(t, err)
diff --git a/consensus/tests/penalty_test.go b/consensus/tests/penalty_test.go
index 504dc4f1dd..4c0cecba16 100644
--- a/consensus/tests/penalty_test.go
+++ b/consensus/tests/penalty_test.go
@@ -36,7 +36,7 @@ func TestHookPenaltyV2Mining(t *testing.T) {
 	// set adaptor round/qc to that of 6299
 	err = utils.DecodeBytesExtraFields(header6300.Extra, &extraField)
 	assert.Nil(t, err)
-	err = adaptor.EngineV2.ProcessQC(blockchain, extraField.QuorumCert)
+	err = adaptor.EngineV2.ProcessQCFaker(blockchain, extraField.QuorumCert)
 	assert.Nil(t, err)
 	headerMining := &types.Header{
 		ParentHash: header6300.ParentHash,
diff --git a/consensus/tests/proposed_block_test.go b/consensus/tests/proposed_block_test.go
index 67d49f01ee..a723983c29 100644
--- a/consensus/tests/proposed_block_test.go
+++ b/consensus/tests/proposed_block_test.go
@@ -29,13 +29,13 @@ func TestShouldSendVoteMsgAndCommitGrandGrandParentBlock(t *testing.T) {
 	}
 
 	voteMsg := <-engineV2.BroadcastCh
-	poolSize := engineV2.GetVotePoolSize(voteMsg.(*utils.Vote))
+	poolSize := engineV2.GetVotePoolSizeFaker(voteMsg.(*utils.Vote))
 
 	assert.Equal(t, poolSize, 1)
 	assert.NotNil(t, voteMsg)
 	assert.Equal(t, currentBlock.Hash(), voteMsg.(*utils.Vote).ProposedBlockInfo.Hash)
 
-	round, _, highestQC, _, _ := engineV2.GetProperties()
+	round, _, highestQC, _, _, _ := engineV2.GetPropertiesFaker()
 	// Shoud trigger setNewRound
 	assert.Equal(t, utils.Round(1), round)
 	// Should not update the highestQC
@@ -53,7 +53,7 @@ func TestShouldSendVoteMsgAndCommitGrandGrandParentBlock(t *testing.T) {
 	// Trigger send vote again but for a new round
 	voteMsg = <-engineV2.BroadcastCh
 	assert.NotNil(t, voteMsg)
-	round, _, highestQC, _, _ = engineV2.GetProperties()
+	round, _, highestQC, _, _, _ = engineV2.GetPropertiesFaker()
 	// Shoud trigger setNewRound
 	assert.Equal(t, utils.Round(2), round)
 	assert.Equal(t, utils.Round(1), highestQC.ProposedBlockInfo.Round)
@@ -70,7 +70,7 @@ func TestShouldSendVoteMsgAndCommitGrandGrandParentBlock(t *testing.T) {
 	// Trigger send vote again but for a new round
 	voteMsg = <-engineV2.BroadcastCh
 	assert.NotNil(t, voteMsg)
-	round, _, highestQC, _, highestCommitBlock := engineV2.GetProperties()
+	round, _, highestQC, _, _, highestCommitBlock := engineV2.GetPropertiesFaker()
 	// Shoud NOT trigger setNewRound as the new block parent QC is round 1 but the currentRound is already 2
 	assert.Equal(t, utils.Round(3), round)
 	assert.Equal(t, utils.Round(2), highestQC.ProposedBlockInfo.Round)
@@ -88,7 +88,7 @@ func TestShouldSendVoteMsgAndCommitGrandGrandParentBlock(t *testing.T) {
 	// Trigger send vote again but for a new round
 	voteMsg = <-engineV2.BroadcastCh
 	assert.NotNil(t, voteMsg)
-	round, _, highestQC, _, highestCommitBlock = engineV2.GetProperties()
+	round, _, highestQC, _, _, highestCommitBlock = engineV2.GetPropertiesFaker()
 
 	assert.Equal(t, utils.Round(4), round)
 	assert.Equal(t, utils.Round(3), highestQC.ProposedBlockInfo.Round)
@@ -117,7 +117,7 @@ func TestShouldNotCommitIfRoundsNotContinousFor3Rounds(t *testing.T) {
 	assert.NotNil(t, voteMsg)
 	assert.Equal(t, currentBlock.Hash(), voteMsg.(*utils.Vote).ProposedBlockInfo.Hash)
 
-	round, _, highestQC, _, highestCommitBlock := engineV2.GetProperties()
+	round, _, highestQC, _, _, highestCommitBlock := engineV2.GetPropertiesFaker()
 
 	grandGrandParentBlock := blockchain.GetBlockByNumber(902)
 	// Shoud trigger setNewRound
@@ -139,7 +139,7 @@ func TestShouldNotCommitIfRoundsNotContinousFor3Rounds(t *testing.T) {
 	// Trigger send vote again but for a new round
 	voteMsg = <-engineV2.BroadcastCh
 	assert.NotNil(t, voteMsg)
-	round, _, highestQC, _, highestCommitBlock = engineV2.GetProperties()
+	round, _, highestQC, _, _, highestCommitBlock = engineV2.GetPropertiesFaker()
 	grandGrandParentBlock = blockchain.GetBlockByNumber(903)
 
 	assert.Equal(t, utils.Round(6), round)
@@ -160,7 +160,7 @@ func TestShouldNotCommitIfRoundsNotContinousFor3Rounds(t *testing.T) {
 	// Trigger send vote again but for a new round
 	voteMsg = <-engineV2.BroadcastCh
 	assert.NotNil(t, voteMsg)
-	round, _, highestQC, _, highestCommitBlock = engineV2.GetProperties()
+	round, _, highestQC, _, _, highestCommitBlock = engineV2.GetPropertiesFaker()
 
 	assert.Equal(t, utils.Round(8), round)
 	assert.Equal(t, utils.Round(7), highestQC.ProposedBlockInfo.Round)
@@ -193,7 +193,7 @@ func TestProposedBlockMessageHandlerSuccessfullyGenerateVote(t *testing.T) {
 	assert.NotNil(t, voteMsg)
 	assert.Equal(t, currentBlock.Hash(), voteMsg.(*utils.Vote).ProposedBlockInfo.Hash)
 
-	round, _, highestQC, _, _ := engineV2.GetProperties()
+	round, _, highestQC, _, _, _ := engineV2.GetPropertiesFaker()
 	// Shoud trigger setNewRound
 	assert.Equal(t, utils.Round(6), round)
 	assert.Equal(t, extraField.QuorumCert.Signatures, highestQC.Signatures)
@@ -219,7 +219,7 @@ func TestShouldNotSetNewRound(t *testing.T) {
 		t.Fatal("Fail propose proposedBlock handler", err)
 	}
 
-	round, _, highestQC, _, _ := engineV2.GetProperties()
+	round, _, highestQC, _, _, _ := engineV2.GetPropertiesFaker()
 	// Shoud not trigger setNewRound
 	assert.Equal(t, utils.Round(6), round)
 	assert.Equal(t, extraField.QuorumCert.Signatures, highestQC.Signatures)
@@ -241,7 +241,7 @@ func TestShouldNotSendVoteMessageIfAlreadyVoteForThisRound(t *testing.T) {
 	assert.NotNil(t, voteMsg)
 	assert.Equal(t, currentBlock.Hash(), voteMsg.(*utils.Vote).ProposedBlockInfo.Hash)
 
-	round, _, _, highestVotedRound, _ := engineV2.GetProperties()
+	round, _, _, _, highestVotedRound, _ := engineV2.GetPropertiesFaker()
 	// Shoud trigger setNewRound
 	assert.Equal(t, utils.Round(6), round)
 	assert.Equal(t, utils.Round(6), highestVotedRound)
@@ -257,7 +257,7 @@ func TestShouldNotSendVoteMessageIfAlreadyVoteForThisRound(t *testing.T) {
 		t.Fatal("Should not trigger vote")
 	case <-time.After(5 * time.Second):
 		// Shoud not trigger setNewRound
-		round, _, _, highestVotedRound, _ = engineV2.GetProperties()
+		round, _, _, _, highestVotedRound, _ = engineV2.GetPropertiesFaker()
 		assert.Equal(t, utils.Round(6), round)
 		assert.Equal(t, utils.Round(6), highestVotedRound)
 	}
@@ -286,7 +286,7 @@ func TestShouldNotSendVoteMsgIfBlockInfoRoundNotEqualCurrentRound(t *testing.T)
 		t.Fatal("Should not trigger vote")
 	case <-time.After(5 * time.Second):
 		// Shoud not trigger setNewRound
-		round, _, _, _, _ := engineV2.GetProperties()
+		round, _, _, _, _, _ := engineV2.GetPropertiesFaker()
 		assert.Equal(t, utils.Round(8), round)
 	}
 }
@@ -328,7 +328,7 @@ func TestShouldNotSendVoteMsgIfBlockNotExtendedFromAncestor(t *testing.T) {
 		t.Fatal("Should not trigger vote")
 	case <-time.After(5 * time.Second):
 		// Shoud not trigger setNewRound
-		round, _, _, _, _ := engineV2.GetProperties()
+		round, _, _, _, _, _ := engineV2.GetPropertiesFaker()
 		assert.Equal(t, utils.Round(7), round)
 	}
 }
@@ -345,7 +345,7 @@ func TestShouldSendVoteMsg(t *testing.T) {
 		if err != nil {
 			t.Fatal(err)
 		}
-		round, _, _, _, _ := engineV2.GetProperties()
+		round, _, _, _, _, _ := engineV2.GetPropertiesFaker()
 		assert.Equal(t, utils.Round(i-900), round)
 		vote := <-engineV2.BroadcastCh
 		assert.Equal(t, round, vote.(*utils.Vote).ProposedBlockInfo.Round)
diff --git a/consensus/tests/sync_info_test.go b/consensus/tests/sync_info_test.go
index 892d026aba..e2cebb1c5f 100644
--- a/consensus/tests/sync_info_test.go
+++ b/consensus/tests/sync_info_test.go
@@ -33,7 +33,7 @@ func TestSyncInfoShouldSuccessfullyUpdateByQC(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	round, _, highestQuorumCert, _, highestCommitBlock := engineV2.GetProperties()
+	round, _, highestQuorumCert, _, _, highestCommitBlock := engineV2.GetPropertiesFaker()
 	// QC is parent block's qc, which is pointing at round 4, hence 4 + 1 = 5
 	assert.Equal(t, utils.Round(5), round)
 	assert.Equal(t, extraField.QuorumCert, highestQuorumCert)
@@ -66,7 +66,36 @@ func TestSyncInfoShouldSuccessfullyUpdateByTC(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	round, _, highestQuorumCert, _, _ := engineV2.GetProperties()
+	round, _, highestQuorumCert, _, _, _ := engineV2.GetPropertiesFaker()
 	assert.Equal(t, utils.Round(7), round)
 	assert.Equal(t, extraField.QuorumCert, highestQuorumCert)
 }
+
+func TestSkipVerifySyncInfoIfBothQcTcNotQualified(t *testing.T) {
+	blockchain, _, _, _, _, _ := PrepareXDCTestBlockChainForV2Engine(t, 905, params.TestXDPoSMockChainConfig, 0)
+	engineV2 := blockchain.Engine().(*XDPoS.XDPoS).EngineV2
+
+	// Make the Highest QC in syncInfo point to an old block to simulate it's no longer qualified
+	parentBlock := blockchain.GetBlockByNumber(903)
+	var extraField utils.ExtraFields_v2
+	err := utils.DecodeBytesExtraFields(parentBlock.Extra(), &extraField)
+	if err != nil {
+		t.Fatal("Fail to decode extra data", err)
+	}
+
+	highestTC := &utils.TimeoutCert{
+		Round:      utils.Round(5),
+		Signatures: []utils.Signature{},
+	}
+
+	syncInfoMsg := &utils.SyncInfo{
+		HighestQuorumCert:  extraField.QuorumCert,
+		HighestTimeoutCert: highestTC,
+	}
+
+	engineV2.SetPropertiesFaker(syncInfoMsg.HighestQuorumCert, syncInfoMsg.HighestTimeoutCert)
+
+	verified, err := engineV2.VerifySyncInfoMessage(blockchain, syncInfoMsg)
+	assert.False(t, verified)
+	assert.Nil(t, err)
+}
diff --git a/consensus/tests/timeout_test.go b/consensus/tests/timeout_test.go
index baba42f861..6eca5f723a 100644
--- a/consensus/tests/timeout_test.go
+++ b/consensus/tests/timeout_test.go
@@ -19,7 +19,7 @@ func TestCountdownTimeoutToSendTimeoutMessage(t *testing.T) {
 	engineV2 := blockchain.Engine().(*XDPoS.XDPoS).EngineV2
 
 	timeoutMsg := <-engineV2.BroadcastCh
-	poolSize := engineV2.GetTimeoutPoolSize(timeoutMsg.(*utils.Timeout))
+	poolSize := engineV2.GetTimeoutPoolSizeFaker(timeoutMsg.(*utils.Timeout))
 	assert.Equal(t, poolSize, 1)
 	assert.NotNil(t, timeoutMsg)
 	assert.Equal(t, uint64(1350), timeoutMsg.(*utils.Timeout).GapNumber)
@@ -99,7 +99,7 @@ func TestTimeoutMessageHandlerSuccessfullyGenerateTCandSyncInfo(t *testing.T) {
 
 	err := engineV2.TimeoutHandler(blockchain, timeoutMsg)
 	assert.Nil(t, err)
-	currentRound, _, _, _, _ := engineV2.GetProperties()
+	currentRound, _, _, _, _, _ := engineV2.GetPropertiesFaker()
 	assert.Equal(t, utils.Round(1), currentRound)
 	timeoutMsg = &utils.Timeout{
 		Round:     utils.Round(1),
@@ -108,7 +108,7 @@ func TestTimeoutMessageHandlerSuccessfullyGenerateTCandSyncInfo(t *testing.T) {
 	}
 	err = engineV2.TimeoutHandler(blockchain, timeoutMsg)
 	assert.Nil(t, err)
-	currentRound, _, _, _, _ = engineV2.GetProperties()
+	currentRound, _, _, _, _, _ = engineV2.GetPropertiesFaker()
 	assert.Equal(t, utils.Round(1), currentRound)
 
 	// Send a timeout with different gap number, it shall not trigger timeout pool hook
@@ -119,7 +119,7 @@ func TestTimeoutMessageHandlerSuccessfullyGenerateTCandSyncInfo(t *testing.T) {
 	}
 	err = engineV2.TimeoutHandler(blockchain, timeoutMsg)
 	assert.Nil(t, err)
-	currentRound, _, _, _, _ = engineV2.GetProperties()
+	currentRound, _, _, _, _, _ = engineV2.GetPropertiesFaker()
 	assert.Equal(t, utils.Round(1), currentRound)
 
 	// Create a timeout message that should trigger timeout pool hook
@@ -134,7 +134,7 @@ func TestTimeoutMessageHandlerSuccessfullyGenerateTCandSyncInfo(t *testing.T) {
 
 	syncInfoMsg := <-engineV2.BroadcastCh
 
-	currentRound, _, _, _, _ = engineV2.GetProperties()
+	currentRound, _, _, _, _, _ = engineV2.GetPropertiesFaker()
 
 	assert.NotNil(t, syncInfoMsg)
 
diff --git a/consensus/tests/verify_block_test.go b/consensus/tests/verify_block_test.go
deleted file mode 100644
index d916aa518f..0000000000
--- a/consensus/tests/verify_block_test.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package tests
-
-import (
-	"encoding/json"
-	"fmt"
-	"testing"
-
-	"github.com/XinFinOrg/XDPoSChain/accounts"
-	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS"
-	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS/utils"
-	"github.com/XinFinOrg/XDPoSChain/params"
-	"github.com/stretchr/testify/assert"
-)
-
-func TestShouldVerifyBlock(t *testing.T) {
-	b, err := json.Marshal(params.TestXDPoSMockChainConfig)
-	assert.Nil(t, err)
-	configString := string(b)
-
-	var config params.ChainConfig
-	err = json.Unmarshal([]byte(configString), &config)
-	assert.Nil(t, err)
-	// Enable verify
-	config.XDPoS.V2.SkipV2Validation = false
-	// Skip the mining time validation by set mine time to 0
-	config.XDPoS.V2.MinePeriod = 0
-	// Block 901 is the first v2 block with round of 1
-	blockchain, _, _, _, _, _ := PrepareXDCTestBlockChainForV2Engine(t, 910, &config, 0)
-	adaptor := blockchain.Engine().(*XDPoS.XDPoS)
-
-	// Happy path
-	err = adaptor.VerifyHeader(blockchain, blockchain.GetBlockByNumber(901).Header(), true)
-	assert.Nil(t, err)
-
-	// Verify non-epoch switch block
-	err = adaptor.VerifyHeader(blockchain, blockchain.GetBlockByNumber(902).Header(), true)
-	assert.Nil(t, err)
-
-	nonEpochSwitchWithValidators := blockchain.GetBlockByNumber(902).Header()
-	nonEpochSwitchWithValidators.Validators = acc1Addr.Bytes()
-	err = adaptor.VerifyHeader(blockchain, nonEpochSwitchWithValidators, true)
-	assert.Equal(t, utils.ErrInvalidFieldInNonEpochSwitch, err)
-}
-
-func TestShouldFailIfNotEnoughQCSignatures(t *testing.T) {
-	b, err := json.Marshal(params.TestXDPoSMockChainConfig)
-	assert.Nil(t, err)
-	configString := string(b)
-
-	var config params.ChainConfig
-	err = json.Unmarshal([]byte(configString), &config)
-	assert.Nil(t, err)
-	// Enable verify
-	config.XDPoS.V2.SkipV2Validation = false
-	// Skip the mining time validation by set mine time to 0
-	config.XDPoS.V2.MinePeriod = 0
-	// Block 901 is the first v2 block with round of 1
-	blockchain, _, currentBlock, signer, signFn, _ := PrepareXDCTestBlockChainForV2Engine(t, 902, &config, 0)
-	adaptor := blockchain.Engine().(*XDPoS.XDPoS)
-
-	parentBlock := blockchain.GetBlockByNumber(901)
-	proposedBlockInfo := &utils.BlockInfo{
-		Hash:   parentBlock.Hash(),
-		Round:  utils.Round(1),
-		Number: parentBlock.Number(),
-	}
-	signedHash, err := signFn(accounts.Account{Address: signer}, utils.VoteSigHash(proposedBlockInfo).Bytes())
-	assert.Nil(t, err)
-	var signatures []utils.Signature
-	// Duplicate the signatures
-	signatures = append(signatures, signedHash, signedHash, signedHash, signedHash, signedHash, signedHash)
-	quorumCert := &utils.QuorumCert{
-		ProposedBlockInfo: proposedBlockInfo,
-		Signatures:        signatures,
-	}
-
-	extra := utils.ExtraFields_v2{
-		Round:      utils.Round(2),
-		QuorumCert: quorumCert,
-	}
-	extraInBytes, err := extra.EncodeToBytes()
-	if err != nil {
-		panic(fmt.Errorf("Error encode extra into bytes: %v", err))
-	}
-	headerWithDuplicatedSignatures := currentBlock.Header()
-	headerWithDuplicatedSignatures.Extra = extraInBytes
-	// Happy path
-	err = adaptor.VerifyHeader(blockchain, headerWithDuplicatedSignatures, true)
-	assert.Equal(t, utils.ErrInvalidQC, err)
-
-}
diff --git a/consensus/tests/verify_header_test.go b/consensus/tests/verify_header_test.go
new file mode 100644
index 0000000000..c9132532a3
--- /dev/null
+++ b/consensus/tests/verify_header_test.go
@@ -0,0 +1,193 @@
+package tests
+
+import (
+	"encoding/json"
+	"fmt"
+	"math/big"
+	"testing"
+	"time"
+
+	"github.com/XinFinOrg/XDPoSChain/accounts"
+	"github.com/XinFinOrg/XDPoSChain/common"
+	"github.com/XinFinOrg/XDPoSChain/consensus"
+	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS"
+	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS/utils"
+	"github.com/XinFinOrg/XDPoSChain/core/types"
+	"github.com/XinFinOrg/XDPoSChain/params"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestShouldVerifyBlock(t *testing.T) {
+	b, err := json.Marshal(params.TestXDPoSMockChainConfig)
+	assert.Nil(t, err)
+	configString := string(b)
+
+	var config params.ChainConfig
+	err = json.Unmarshal([]byte(configString), &config)
+	assert.Nil(t, err)
+	// Enable verify
+	config.XDPoS.V2.SkipV2Validation = false
+	// Skip the mining time validation by set mine time to 0
+	config.XDPoS.V2.MinePeriod = 0
+	// Block 901 is the first v2 block with round of 1
+	blockchain, _, _, signer, signFn, _ := PrepareXDCTestBlockChainForV2Engine(t, 910, &config, 0)
+	adaptor := blockchain.Engine().(*XDPoS.XDPoS)
+
+	// Happy path
+	err = adaptor.VerifyHeader(blockchain, blockchain.GetBlockByNumber(901).Header(), true)
+	assert.Nil(t, err)
+
+	// Unhappy path
+
+	// Verify non-epoch switch block
+	err = adaptor.VerifyHeader(blockchain, blockchain.GetBlockByNumber(902).Header(), true)
+	assert.Nil(t, err)
+
+	nonEpochSwitchWithValidators := blockchain.GetBlockByNumber(902).Header()
+	nonEpochSwitchWithValidators.Validators = acc1Addr.Bytes()
+	err = adaptor.VerifyHeader(blockchain, nonEpochSwitchWithValidators, true)
+	assert.Equal(t, utils.ErrInvalidFieldInNonEpochSwitch, err)
+
+	noValidatorBlock := blockchain.GetBlockByNumber(902).Header()
+	noValidatorBlock.Validator = []byte{}
+	err = adaptor.VerifyHeader(blockchain, noValidatorBlock, true)
+	assert.Equal(t, consensus.ErrNoValidatorSignature, err)
+
+	blockFromFuture := blockchain.GetBlockByNumber(902).Header()
+	blockFromFuture.Time = big.NewInt(time.Now().Unix() + 10000)
+	err = adaptor.VerifyHeader(blockchain, blockFromFuture, true)
+	assert.Equal(t, consensus.ErrFutureBlock, err)
+
+	invalidQcBlock := blockchain.GetBlockByNumber(902).Header()
+	invalidQcBlock.Extra = []byte{}
+	err = adaptor.VerifyHeader(blockchain, invalidQcBlock, true)
+	assert.Equal(t, utils.ErrInvalidV2Extra, err)
+
+	// Epoch switch
+	invalidAuthNonceBlock := blockchain.GetBlockByNumber(901).Header()
+	invalidAuthNonceBlock.Nonce = types.BlockNonce{123}
+	err = adaptor.VerifyHeader(blockchain, invalidAuthNonceBlock, true)
+	assert.Equal(t, utils.ErrInvalidVote, err)
+
+	emptyValidatorsBlock := blockchain.GetBlockByNumber(901).Header()
+	emptyValidatorsBlock.Validators = []byte{}
+	err = adaptor.VerifyHeader(blockchain, emptyValidatorsBlock, true)
+	assert.Equal(t, utils.ErrEmptyEpochSwitchValidators, err)
+
+	invalidValidatorsSignerBlock := blockchain.GetBlockByNumber(901).Header()
+	invalidValidatorsSignerBlock.Validators = []byte{123}
+	err = adaptor.VerifyHeader(blockchain, invalidValidatorsSignerBlock, true)
+	assert.Equal(t, utils.ErrInvalidCheckpointSigners, err)
+
+	// non-epoch switch
+	invalidValidatorsExistBlock := blockchain.GetBlockByNumber(902).Header()
+	invalidValidatorsExistBlock.Validators = []byte{123}
+	err = adaptor.VerifyHeader(blockchain, invalidValidatorsExistBlock, true)
+	assert.Equal(t, utils.ErrInvalidFieldInNonEpochSwitch, err)
+
+	merkleRoot := "35999dded35e8db12de7e6c1471eb9670c162eec616ecebbaf4fddd4676fb123"
+	parentNotExistBlock := blockchain.GetBlockByNumber(901).Header()
+	parentNotExistBlock.ParentHash = common.HexToHash(merkleRoot)
+	err = adaptor.VerifyHeader(blockchain, parentNotExistBlock, true)
+	assert.Equal(t, consensus.ErrUnknownAncestor, err)
+
+	tooFastMinedBlock := blockchain.GetBlockByNumber(902).Header()
+	tooFastMinedBlock.Time = big.NewInt(time.Now().Unix() - 2)
+	err = adaptor.VerifyHeader(blockchain, tooFastMinedBlock, true)
+	assert.Equal(t, utils.ErrInvalidTimestamp, err)
+
+	invalidDifficultyBlock := blockchain.GetBlockByNumber(902).Header()
+	invalidDifficultyBlock.Difficulty = big.NewInt(2)
+	err = adaptor.VerifyHeader(blockchain, invalidDifficultyBlock, true)
+	assert.Equal(t, utils.ErrInvalidDifficulty, err)
+
+	// Creat an invalid QC round
+	proposedBlockInfo := &utils.BlockInfo{
+		Hash:   blockchain.GetBlockByNumber(902).Hash(),
+		Round:  utils.Round(2),
+		Number: blockchain.GetBlockByNumber(902).Number(),
+	}
+	// Genrate QC
+	signedHash, err := signFn(accounts.Account{Address: signer}, utils.VoteSigHash(proposedBlockInfo).Bytes())
+	if err != nil {
+		panic(fmt.Errorf("Error generate QC by creating signedHash: %v", err))
+	}
+	// Sign from acc 1, 2, 3
+	acc1SignedHash := SignHashByPK(acc1Key, utils.VoteSigHash(proposedBlockInfo).Bytes())
+	acc2SignedHash := SignHashByPK(acc2Key, utils.VoteSigHash(proposedBlockInfo).Bytes())
+	acc3SignedHash := SignHashByPK(acc3Key, utils.VoteSigHash(proposedBlockInfo).Bytes())
+	var signatures []utils.Signature
+	signatures = append(signatures, signedHash, acc1SignedHash, acc2SignedHash, acc3SignedHash)
+	quorumCert := &utils.QuorumCert{
+		ProposedBlockInfo: proposedBlockInfo,
+		Signatures:        signatures,
+	}
+
+	extra := utils.ExtraFields_v2{
+		Round:      utils.Round(2),
+		QuorumCert: quorumCert,
+	}
+	extraInBytes, err := extra.EncodeToBytes()
+	if err != nil {
+		panic(fmt.Errorf("Error encode extra into bytes: %v", err))
+	}
+
+	invalidRoundBlock := blockchain.GetBlockByNumber(902).Header()
+	invalidRoundBlock.Extra = extraInBytes
+	err = adaptor.VerifyHeader(blockchain, invalidRoundBlock, true)
+	assert.Equal(t, utils.ErrRoundInvalid, err)
+
+	invalidPenaltiesExistBlock := blockchain.GetBlockByNumber(902).Header()
+	invalidPenaltiesExistBlock.Penalties = common.Hex2BytesFixed("123131231", 20)
+	err = adaptor.VerifyHeader(blockchain, invalidPenaltiesExistBlock, true)
+	assert.Equal(t, utils.ErrPenaltyListDoesNotMatch, err)
+
+}
+
+func TestShouldFailIfNotEnoughQCSignatures(t *testing.T) {
+	b, err := json.Marshal(params.TestXDPoSMockChainConfig)
+	assert.Nil(t, err)
+	configString := string(b)
+
+	var config params.ChainConfig
+	err = json.Unmarshal([]byte(configString), &config)
+	assert.Nil(t, err)
+	// Enable verify
+	config.XDPoS.V2.SkipV2Validation = false
+	// Skip the mining time validation by set mine time to 0
+	config.XDPoS.V2.MinePeriod = 0
+	// Block 901 is the first v2 block with round of 1
+	blockchain, _, currentBlock, signer, signFn, _ := PrepareXDCTestBlockChainForV2Engine(t, 902, &config, 0)
+	adaptor := blockchain.Engine().(*XDPoS.XDPoS)
+
+	parentBlock := blockchain.GetBlockByNumber(901)
+	proposedBlockInfo := &utils.BlockInfo{
+		Hash:   parentBlock.Hash(),
+		Round:  utils.Round(1),
+		Number: parentBlock.Number(),
+	}
+	signedHash, err := signFn(accounts.Account{Address: signer}, utils.VoteSigHash(proposedBlockInfo).Bytes())
+	assert.Nil(t, err)
+	var signatures []utils.Signature
+	// Duplicate the signatures
+	signatures = append(signatures, signedHash, signedHash, signedHash, signedHash, signedHash, signedHash)
+	quorumCert := &utils.QuorumCert{
+		ProposedBlockInfo: proposedBlockInfo,
+		Signatures:        signatures,
+	}
+
+	extra := utils.ExtraFields_v2{
+		Round:      utils.Round(2),
+		QuorumCert: quorumCert,
+	}
+	extraInBytes, err := extra.EncodeToBytes()
+	if err != nil {
+		panic(fmt.Errorf("Error encode extra into bytes: %v", err))
+	}
+	headerWithDuplicatedSignatures := currentBlock.Header()
+	headerWithDuplicatedSignatures.Extra = extraInBytes
+	// Happy path
+	err = adaptor.VerifyHeader(blockchain, headerWithDuplicatedSignatures, true)
+	assert.Equal(t, utils.ErrInvalidQC, err)
+
+}
diff --git a/consensus/tests/vote_test.go b/consensus/tests/vote_test.go
index 404fcfcfa9..77de5f0e4b 100644
--- a/consensus/tests/vote_test.go
+++ b/consensus/tests/vote_test.go
@@ -38,7 +38,7 @@ func TestVoteMessageHandlerSuccessfullyGeneratedAndProcessQCForFistV2Round(t *te
 
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ := engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ := engineV2.GetPropertiesFaker()
 	// initialised with nil and 0 round
 	assert.Nil(t, lockQuorumCert)
 	assert.Equal(t, utils.Round(0), highestQuorumCert.ProposedBlockInfo.Round)
@@ -52,7 +52,7 @@ func TestVoteMessageHandlerSuccessfullyGeneratedAndProcessQCForFistV2Round(t *te
 	}
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ = engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ = engineV2.GetPropertiesFaker()
 	// Still using the initlised value because we did not yet go to the next round
 	assert.Nil(t, lockQuorumCert)
 	assert.Equal(t, utils.Round(0), highestQuorumCert.ProposedBlockInfo.Round)
@@ -68,7 +68,7 @@ func TestVoteMessageHandlerSuccessfullyGeneratedAndProcessQCForFistV2Round(t *te
 
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ = engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ = engineV2.GetPropertiesFaker()
 	// The lockQC shall be the parent's QC round number
 	assert.Equal(t, utils.Round(0), lockQuorumCert.ProposedBlockInfo.Round)
 	// The highestQC proposedBlockInfo shall be the same as the one from its votes
@@ -100,7 +100,7 @@ func TestVoteMessageHandlerSuccessfullyGeneratedAndProcessQC(t *testing.T) {
 
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ := engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ := engineV2.GetPropertiesFaker()
 	// initialised with nil and 0 round
 	assert.Nil(t, lockQuorumCert)
 	assert.Equal(t, utils.Round(0), highestQuorumCert.ProposedBlockInfo.Round)
@@ -112,7 +112,7 @@ func TestVoteMessageHandlerSuccessfullyGeneratedAndProcessQC(t *testing.T) {
 	}
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ = engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ = engineV2.GetPropertiesFaker()
 	// Still using the initlised value because we did not yet go to the next round
 	assert.Nil(t, lockQuorumCert)
 	assert.Equal(t, utils.Round(0), highestQuorumCert.ProposedBlockInfo.Round)
@@ -130,7 +130,7 @@ func TestVoteMessageHandlerSuccessfullyGeneratedAndProcessQC(t *testing.T) {
 	}
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ = engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ = engineV2.GetPropertiesFaker()
 	// Still using the initlised value because we did not yet go to the next round
 	assert.Nil(t, lockQuorumCert)
 	assert.Equal(t, utils.Round(0), highestQuorumCert.ProposedBlockInfo.Round)
@@ -145,7 +145,7 @@ func TestVoteMessageHandlerSuccessfullyGeneratedAndProcessQC(t *testing.T) {
 
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, highestCommitBlock := engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, highestCommitBlock := engineV2.GetPropertiesFaker()
 	// The lockQC shall be the parent's QC round number
 	assert.Equal(t, utils.Round(4), lockQuorumCert.ProposedBlockInfo.Round)
 	// The highestQC proposedBlockInfo shall be the same as the one from its votes
@@ -202,7 +202,7 @@ func TestProcessVoteMsgThenTimeoutMsg(t *testing.T) {
 	blockInfo := &utils.BlockInfo{
 		Hash:   currentBlock.Hash(),
 		Round:  utils.Round(5),
-		Number: big.NewInt(901),
+		Number: big.NewInt(905),
 	}
 	voteSigningHash := utils.VoteSigHash(blockInfo)
 	// Create two vote message which will not reach vote pool threshold
@@ -214,7 +214,7 @@ func TestProcessVoteMsgThenTimeoutMsg(t *testing.T) {
 
 	err := engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ := engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ := engineV2.GetPropertiesFaker()
 	// initialised with nil and 0 round
 	assert.Nil(t, lockQuorumCert)
 	assert.Equal(t, utils.Round(0), highestQuorumCert.ProposedBlockInfo.Round)
@@ -226,7 +226,7 @@ func TestProcessVoteMsgThenTimeoutMsg(t *testing.T) {
 	}
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, _, _, _, _ = engineV2.GetProperties()
+	currentRound, _, _, _, _, _ = engineV2.GetPropertiesFaker()
 	assert.Equal(t, utils.Round(5), currentRound)
 
 	// Create a vote message that should trigger vote pool hook
@@ -238,7 +238,7 @@ func TestProcessVoteMsgThenTimeoutMsg(t *testing.T) {
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
 	// Check round has now changed from 5 to 6
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ = engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ = engineV2.GetPropertiesFaker()
 	// The lockQC shall be the parent's QC round number
 	assert.Equal(t, utils.Round(4), lockQuorumCert.ProposedBlockInfo.Round)
 	// The highestQC proposedBlockInfo shall be the same as the one from its votes
@@ -266,7 +266,7 @@ func TestProcessVoteMsgThenTimeoutMsg(t *testing.T) {
 
 	err = engineV2.TimeoutHandler(blockchain, timeoutMsg)
 	assert.Nil(t, err)
-	currentRound, _, _, _, _ = engineV2.GetProperties()
+	currentRound, _, _, _, _, _ = engineV2.GetPropertiesFaker()
 	assert.Equal(t, utils.Round(6), currentRound)
 	timeoutMsg = &utils.Timeout{
 		Round:     utils.Round(6),
@@ -274,7 +274,7 @@ func TestProcessVoteMsgThenTimeoutMsg(t *testing.T) {
 	}
 	err = engineV2.TimeoutHandler(blockchain, timeoutMsg)
 	assert.Nil(t, err)
-	currentRound, _, _, _, _ = engineV2.GetProperties()
+	currentRound, _, _, _, _, _ = engineV2.GetPropertiesFaker()
 	assert.Equal(t, utils.Round(6), currentRound)
 
 	// Create a timeout message that should trigger timeout pool hook
@@ -300,7 +300,7 @@ func TestProcessVoteMsgThenTimeoutMsg(t *testing.T) {
 	sigatures := []utils.Signature{[]byte{1}, []byte{2}, []byte{3}}
 	assert.ElementsMatch(t, tc.Signatures, sigatures)
 	// Round shall be +1 now
-	currentRound, _, _, _, _ = engineV2.GetProperties()
+	currentRound, _, _, _, _, _ = engineV2.GetPropertiesFaker()
 	assert.Equal(t, utils.Round(7), currentRound)
 }
 
@@ -346,7 +346,7 @@ func TestVoteMessageShallNotThrowErrorIfBlockNotYetExist(t *testing.T) {
 
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
-	currentRound, lockQuorumCert, highestQuorumCert, _, _ := engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ := engineV2.GetPropertiesFaker()
 	// Still using the initlised value because we did not yet go to the next round
 	assert.Nil(t, lockQuorumCert)
 	assert.Equal(t, utils.Round(0), highestQuorumCert.ProposedBlockInfo.Round)
@@ -364,7 +364,7 @@ func TestVoteMessageShallNotThrowErrorIfBlockNotYetExist(t *testing.T) {
 	err = engineV2.VoteHandler(blockchain, voteMsg)
 	assert.Nil(t, err)
 
-	currentRound, lockQuorumCert, highestQuorumCert, _, highestCommitBlock := engineV2.GetProperties()
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, highestCommitBlock := engineV2.GetPropertiesFaker()
 	// The lockQC shall be the parent's QC round number
 	assert.Equal(t, utils.Round(5), lockQuorumCert.ProposedBlockInfo.Round)
 	// The highestQC proposedBlockInfo shall be the same as the one from its votes
@@ -375,25 +375,80 @@ func TestVoteMessageShallNotThrowErrorIfBlockNotYetExist(t *testing.T) {
 	assert.Equal(t, big.NewInt(904), highestCommitBlock.Number)
 }
 
+func TestProcessVoteMsgFailIfVerifyBlockInfoFail(t *testing.T) {
+	blockchain, _, currentBlock, _, _, _ := PrepareXDCTestBlockChainForV2Engine(t, 905, params.TestXDPoSMockChainConfig, 0)
+	engineV2 := blockchain.Engine().(*XDPoS.XDPoS).EngineV2
+
+	// Set round to 5
+	engineV2.SetNewRoundFaker(blockchain, utils.Round(5), false)
+
+	// Start with vote messages
+	blockInfo := &utils.BlockInfo{
+		Hash:   currentBlock.ParentHash(),
+		Round:  utils.Round(5),
+		Number: big.NewInt(905),
+	}
+	voteSigningHash := utils.VoteSigHash(blockInfo)
+	// Create two vote message which will not reach vote pool threshold
+	signedHash := SignHashByPK(acc1Key, voteSigningHash.Bytes())
+	voteMsg := &utils.Vote{
+		ProposedBlockInfo: blockInfo,
+		Signature:         signedHash,
+	}
+
+	err := engineV2.VoteHandler(blockchain, voteMsg)
+	assert.Nil(t, err)
+	currentRound, lockQuorumCert, highestQuorumCert, _, _, _ := engineV2.GetPropertiesFaker()
+	// initialised with nil and 0 round
+	assert.Nil(t, lockQuorumCert)
+	assert.Equal(t, utils.Round(0), highestQuorumCert.ProposedBlockInfo.Round)
+
+	assert.Equal(t, utils.Round(5), currentRound)
+	voteMsg = &utils.Vote{
+		ProposedBlockInfo: blockInfo,
+		Signature:         SignHashByPK(acc2Key, voteSigningHash.Bytes()),
+	}
+	err = engineV2.VoteHandler(blockchain, voteMsg)
+	assert.Nil(t, err)
+	currentRound, _, _, _, _, _ = engineV2.GetPropertiesFaker()
+	assert.Equal(t, utils.Round(5), currentRound)
+
+	// Create a vote message that should trigger vote pool hook
+	voteMsg = &utils.Vote{
+		ProposedBlockInfo: blockInfo,
+		Signature:         SignHashByPK(acc3Key, voteSigningHash.Bytes()),
+	}
+
+	err = engineV2.VoteHandler(blockchain, voteMsg)
+	expectedError := fmt.Errorf("[VerifyBlockInfo] chain header number does not match for the received blockInfo at hash: %v", blockInfo.Hash.Hex())
+	assert.Equal(t, expectedError, err)
+}
+
 func TestVerifyVoteMsg(t *testing.T) {
 	blockchain, _, currentBlock, signer, signFn, _ := PrepareXDCTestBlockChainForV2Engine(t, 915, params.TestXDPoSMockChainConfig, 0)
 	engineV2 := blockchain.Engine().(*XDPoS.XDPoS).EngineV2
 
 	blockInfo := &utils.BlockInfo{
 		Hash:   currentBlock.Hash(),
-		Round:  utils.Round(15),
+		Round:  utils.Round(14),
 		Number: big.NewInt(915),
 	}
 
-	// Invalid vote msg
+	// Valid message but disqualified as the round does not match
 	voteMsg := &utils.Vote{
 		ProposedBlockInfo: blockInfo,
 		Signature:         []byte{1},
 	}
-
+	engineV2.SetNewRoundFaker(blockchain, utils.Round(15), false)
 	verified, err := engineV2.VerifyVoteMessage(blockchain, voteMsg)
 	assert.False(t, verified)
-	assert.NotNil(t, err)
+	assert.Nil(t, err)
+
+	// Invalid vote message with wrong signature
+	engineV2.SetNewRoundFaker(blockchain, utils.Round(14), false)
+	verified, err = engineV2.VerifyVoteMessage(blockchain, voteMsg)
+	assert.False(t, verified)
+	assert.Equal(t, "Error while verifying message: invalid signature length", err.Error())
 
 	// Valid vote message from a master node
 	signHash, _ := signFn(accounts.Account{Address: signer}, utils.VoteSigHash(blockInfo).Bytes())
diff --git a/eth/bft/bft_hander_test.go b/eth/bft/bft_hander_test.go
index 07f0edd8fe..dbd8b3a9e4 100644
--- a/eth/bft/bft_hander_test.go
+++ b/eth/bft/bft_hander_test.go
@@ -145,6 +145,87 @@ func TestNotBoardcastInvalidVote(t *testing.T) {
 	}
 }
 
+func TestBoardcastButNotProcessDisqualifiedVotes(t *testing.T) {
+	tester := newTester()
+	handlerCounter := uint32(0)
+	broadcastCounter := uint32(0)
+	targetVotes := 0
+
+	tester.bfter.consensus.verifyVote = func(chain consensus.ChainReader, vote *utils.Vote) (bool, error) {
+		return false, nil // return false but with nil in error means the message is valid but disqualified
+	}
+
+	tester.bfter.consensus.voteHandler = func(chain consensus.ChainReader, vote *utils.Vote) error {
+		atomic.AddUint32(&handlerCounter, 1)
+		return nil
+	}
+	tester.bfter.broadcast.Vote = func(*utils.Vote) {
+		atomic.AddUint32(&broadcastCounter, 1)
+	}
+
+	vote := utils.Vote{ProposedBlockInfo: &utils.BlockInfo{}}
+	tester.bfter.Vote(&vote)
+
+	time.Sleep(50 * time.Millisecond)
+	if int(handlerCounter) != targetVotes || int(broadcastCounter) != 1 {
+		t.Fatalf("count mismatch: have %v on handler, %v on broadcast, want %v", handlerCounter, broadcastCounter, targetVotes)
+	}
+}
+
+func TestBoardcastButNotProcessDisqualifiedTimeout(t *testing.T) {
+	tester := newTester()
+	handlerCounter := uint32(0)
+	broadcastCounter := uint32(0)
+	targetTimeout := 0
+
+	tester.bfter.consensus.verifyTimeout = func(chain consensus.ChainReader, timeout *utils.Timeout) (bool, error) {
+		return false, nil // return false but with nil in error means the message is valid but disqualified
+	}
+
+	tester.bfter.consensus.timeoutHandler = func(chain consensus.ChainReader, timeout *utils.Timeout) error {
+		atomic.AddUint32(&handlerCounter, 1)
+		return nil
+	}
+	tester.bfter.broadcast.Timeout = func(*utils.Timeout) {
+		atomic.AddUint32(&broadcastCounter, 1)
+	}
+
+	timeout := utils.Timeout{}
+	tester.bfter.Timeout(&timeout)
+
+	time.Sleep(50 * time.Millisecond)
+	if int(handlerCounter) != targetTimeout || int(broadcastCounter) != 1 {
+		t.Fatalf("count mismatch: have %v on handler, %v on broadcast, want %v", handlerCounter, broadcastCounter, targetTimeout)
+	}
+}
+
+func TestBoardcastButNotProcessDisqualifiedSyncInfo(t *testing.T) {
+	tester := newTester()
+	handlerCounter := uint32(0)
+	broadcastCounter := uint32(0)
+	targetSyncInfo := 0
+
+	tester.bfter.consensus.verifySyncInfo = func(chain consensus.ChainReader, syncInfo *utils.SyncInfo) (bool, error) {
+		return false, nil // return false but with nil in error means the message is valid but disqualified
+	}
+
+	tester.bfter.consensus.syncInfoHandler = func(chain consensus.ChainReader, syncInfo *utils.SyncInfo) error {
+		atomic.AddUint32(&handlerCounter, 1)
+		return nil
+	}
+	tester.bfter.broadcast.SyncInfo = func(*utils.SyncInfo) {
+		atomic.AddUint32(&broadcastCounter, 1)
+	}
+
+	syncInfo := utils.SyncInfo{}
+	tester.bfter.SyncInfo(&syncInfo)
+
+	time.Sleep(50 * time.Millisecond)
+	if int(handlerCounter) != targetSyncInfo || int(broadcastCounter) != 1 {
+		t.Fatalf("count mismatch: have %v on handler, %v on broadcast, want %v", handlerCounter, broadcastCounter, targetSyncInfo)
+	}
+}
+
 // TODO: SyncInfo and Timeout Test, should be same as Vote.
 // Once all test on vote covered, then duplicate to others
 
@@ -198,9 +279,7 @@ func TestTimeoutHandlerRoundNotEqual(t *testing.T) {
 		}
 	}
 
-	tester.bfter.broadcast.Timeout = func(*utils.Timeout) {
-		return
-	}
+	tester.bfter.broadcast.Timeout = func(*utils.Timeout) {}
 
 	timeoutMsg := &utils.Timeout{}
 
diff --git a/eth/bft/bft_handler.go b/eth/bft/bft_handler.go
index ce1ce899df..5977efefb9 100644
--- a/eth/bft/bft_handler.go
+++ b/eth/bft/bft_handler.go
@@ -1,8 +1,6 @@
 package bft
 
 import (
-	"fmt"
-
 	"github.com/XinFinOrg/XDPoSChain/consensus"
 	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS"
 	"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS/utils"
@@ -40,7 +38,7 @@ type ConsensusFns struct {
 	verifyTimeout  func(consensus.ChainReader, *utils.Timeout) (bool, error)
 	timeoutHandler func(consensus.ChainReader, *utils.Timeout) error
 
-	verifySyncInfo  func(consensus.ChainReader, *utils.SyncInfo) error
+	verifySyncInfo  func(consensus.ChainReader, *utils.SyncInfo) (bool, error)
 	syncInfoHandler func(consensus.ChainReader, *utils.SyncInfo) error
 }
 
@@ -88,25 +86,25 @@ func (b *Bfter) Vote(vote *utils.Vote) error {
 
 	verified, err := b.consensus.verifyVote(b.blockChainReader, vote)
 
-	if err != nil || !verified {
-		log.Error("Verify BFT Vote", "error", err, "verified", verified)
-		if !verified {
-			return fmt.Errorf("Fail to verify vote")
-		}
+	if err != nil {
+		log.Error("Verify BFT Vote", "error", err)
 		return err
 	}
 
 	b.broadcastCh <- vote
 
-	err = b.consensus.voteHandler(b.blockChainReader, vote)
-	if err != nil {
-		if _, ok := err.(*utils.ErrIncomingMessageRoundTooFarFromCurrentRound); ok {
-			log.Warn("vote round not equal", "error", err, "vote", vote.Hash())
+	if verified {
+		err = b.consensus.voteHandler(b.blockChainReader, vote)
+		if err != nil {
+			if _, ok := err.(*utils.ErrIncomingMessageRoundTooFarFromCurrentRound); ok {
+				log.Warn("vote round not equal", "error", err, "vote", vote.Hash())
+				return err
+			}
+			log.Error("handle BFT Vote", "error", err)
 			return err
 		}
-		log.Error("handle BFT Vote", "error", err)
-		return err
 	}
+
 	return nil
 }
 func (b *Bfter) Timeout(timeout *utils.Timeout) error {
@@ -117,24 +115,23 @@ func (b *Bfter) Timeout(timeout *utils.Timeout) error {
 	}
 	verified, err := b.consensus.verifyTimeout(b.blockChainReader, timeout)
 	if err != nil {
-		log.Error("Verify BFT Timeout", "error", err)
+		log.Error("Verify BFT Timeout", "timeoutRound", timeout.Round, "timeoutGapNum", timeout.GapNumber, "error", err)
 		return err
 	}
-	if !verified {
-		log.Warn("Timeout message failed to verify", "timeoutRound", timeout.Round, "timeoutGapNum", timeout.GapNumber)
-		return fmt.Errorf("Fail to verify the received timeout message")
-	}
-	b.broadcastCh <- timeout
 
-	err = b.consensus.timeoutHandler(b.blockChainReader, timeout)
-	if err != nil {
-		if _, ok := err.(*utils.ErrIncomingMessageRoundNotEqualCurrentRound); ok {
-			log.Warn("timeout round not equal", "error", err)
+	b.broadcastCh <- timeout
+	if verified {
+		err = b.consensus.timeoutHandler(b.blockChainReader, timeout)
+		if err != nil {
+			if _, ok := err.(*utils.ErrIncomingMessageRoundNotEqualCurrentRound); ok {
+				log.Warn("timeout round not equal", "error", err)
+				return err
+			}
+			log.Error("handle BFT Timeout", "error", err)
 			return err
 		}
-		log.Error("handle BFT Timeout", "error", err)
-		return err
 	}
+
 	return nil
 }
 func (b *Bfter) SyncInfo(syncInfo *utils.SyncInfo) error {
@@ -143,18 +140,20 @@ func (b *Bfter) SyncInfo(syncInfo *utils.SyncInfo) error {
 		log.Trace("Discarded SyncInfo, known SyncInfo", "hash", syncInfo.Hash())
 		return nil
 	}
-	err := b.consensus.verifySyncInfo(b.blockChainReader, syncInfo)
+	verified, err := b.consensus.verifySyncInfo(b.blockChainReader, syncInfo)
 	if err != nil {
 		log.Error("Verify BFT SyncInfo", "error", err)
 		return err
 	}
 
 	b.broadcastCh <- syncInfo
-
-	err = b.consensus.syncInfoHandler(b.blockChainReader, syncInfo)
-	if err != nil {
-		log.Error("handle BFT SyncInfo", "error", err)
-		return err
+	// Process only if verified and qualified
+	if verified {
+		err = b.consensus.syncInfoHandler(b.blockChainReader, syncInfo)
+		if err != nil {
+			log.Error("handle BFT SyncInfo", "error", err)
+			return err
+		}
 	}
 	return nil
 }