diff --git a/interface/common/resdb_state_accessor.cpp b/interface/common/resdb_state_accessor.cpp
index 34db7eab1..ec7033ea6 100644
--- a/interface/common/resdb_state_accessor.cpp
+++ b/interface/common/resdb_state_accessor.cpp
@@ -35,8 +35,7 @@ std::unique_ptr<NetChannel> ResDBStateAccessor::GetNetChannel(
 }
 
 // Obtain ReplicaState of each replica.
-absl::StatusOr<ReplicaState>
-ResDBStateAccessor::GetReplicaState() {
+absl::StatusOr<ReplicaState> ResDBStateAccessor::GetReplicaState() {
   const auto& client_info = config_.GetReplicaInfos()[0];
 
   Request request;
diff --git a/interface/common/resdb_state_accessor_test.cpp b/interface/common/resdb_state_accessor_test.cpp
index fad1e4604..ad27ca5f8 100644
--- a/interface/common/resdb_state_accessor_test.cpp
+++ b/interface/common/resdb_state_accessor_test.cpp
@@ -28,8 +28,8 @@
 namespace resdb {
 namespace {
 
-using ::resdb::testing::EqualsProto;
 using ::google::protobuf::util::MessageDifferencer;
+using ::resdb::testing::EqualsProto;
 using ::testing::ElementsAre;
 using ::testing::Invoke;
 using ::testing::Test;
diff --git a/interface/common/resdb_txn_accessor.cpp b/interface/common/resdb_txn_accessor.cpp
index 55ef23b43..c9c2049c4 100644
--- a/interface/common/resdb_txn_accessor.cpp
+++ b/interface/common/resdb_txn_accessor.cpp
@@ -147,4 +147,44 @@ absl::StatusOr<std::vector<Request>> ResDBTxnAccessor::GetRequestFromReplica(
   return txn_resp;
 }
 
+absl::StatusOr<uint64_t> ResDBTxnAccessor::GetBlockNumbers() {
+  QueryRequest request;
+  request.set_min_seq(0);
+  request.set_max_seq(0);
+
+  std::vector<std::unique_ptr<NetChannel>> clients;
+  std::vector<std::thread> ths;
+  std::string final_str;
+  std::mutex mtx;
+  std::condition_variable resp_cv;
+
+  std::unique_ptr<NetChannel> client =
+      GetNetChannel(replicas_[0].ip(), replicas_[0].port());
+
+  LOG(ERROR) << "ip:" << replicas_[0].ip() << " port:" << replicas_[0].port();
+
+  std::string response_str;
+  int ret = 0;
+  for (int i = 0; i < 5; ++i) {
+    ret = client->SendRequest(request, Request::TYPE_QUERY);
+    if (ret) {
+      continue;
+    }
+    client->SetRecvTimeout(100000);
+    ret = client->RecvRawMessageStr(&response_str);
+    LOG(ERROR) << "receive str:" << ret << " len:" << response_str.size();
+    if (ret != 0) {
+      continue;
+    }
+    break;
+  }
+
+  QueryResponse resp;
+  if (response_str.empty() || !resp.ParseFromString(response_str)) {
+    LOG(ERROR) << "parse fail len:" << final_str.size();
+    return absl::InternalError("recv data fail.");
+  }
+  return resp.max_seq();
+}
+
 }  // namespace resdb
diff --git a/interface/common/resdb_txn_accessor.h b/interface/common/resdb_txn_accessor.h
index 9fab8d222..db5dc042a 100644
--- a/interface/common/resdb_txn_accessor.h
+++ b/interface/common/resdb_txn_accessor.h
@@ -40,6 +40,8 @@ class ResDBTxnAccessor {
   virtual absl::StatusOr<std::vector<Request>> GetRequestFromReplica(
       uint64_t min_seq, uint64_t max_seq, const ReplicaInfo& replica);
 
+  virtual absl::StatusOr<uint64_t> GetBlockNumbers();
+
  protected:
   virtual std::unique_ptr<NetChannel> GetNetChannel(const std::string& ip,
                                                     int port);
diff --git a/platform/networkstrate/consensus_manager.cpp b/platform/networkstrate/consensus_manager.cpp
index 0e8667e28..00b708109 100644
--- a/platform/networkstrate/consensus_manager.cpp
+++ b/platform/networkstrate/consensus_manager.cpp
@@ -210,9 +210,9 @@ int ConsensusManager::ProcessHeartBeat(std::unique_ptr<Context> context,
   }
 
   LOG(ERROR) << "receive public size:" << hb_info.public_keys().size()
-            << " primary:" << hb_info.primary()
-            << " version:" << hb_info.version()
-            << " from region:" << request->region_info().region_id();
+             << " primary:" << hb_info.primary()
+             << " version:" << hb_info.version()
+             << " from region:" << request->region_info().region_id();
 
   if (request->region_info().region_id() ==
       config_.GetConfigData().self_region_id()) {
diff --git a/platform/proto/resdb.proto b/platform/proto/resdb.proto
index b17b12404..14ad976a7 100644
--- a/platform/proto/resdb.proto
+++ b/platform/proto/resdb.proto
@@ -168,6 +168,7 @@ message QueryRequest {
 
 message QueryResponse {
   repeated Request transactions = 1;
+  uint64 max_seq = 2;
 }
 
 message CustomQueryResponse {