diff --git a/src/idl/chat.proto b/src/idl/chat.proto
index c62c46b..c359029 100644
--- a/src/idl/chat.proto
+++ b/src/idl/chat.proto
@@ -5,13 +5,13 @@ option go_package = "GuGoTik/src/rpc/chat";
 message ChatRequest {
   uint32 actor_id = 1;
   uint32 user_id = 2;
-  uint32 pre_msg_time = 3;
+  uint64 pre_msg_time = 3;
 }
 
 message Message {
   uint32 id = 1;
   string content = 2;
-  uint32 create_time = 3;
+  uint64 create_time = 3;
   optional uint32 from_user_id = 4;
   optional uint32 to_user_id = 5;
 }
diff --git a/src/rpc/chat/chat.pb.go b/src/rpc/chat/chat.pb.go
index 4061623..43e2a1e 100644
--- a/src/rpc/chat/chat.pb.go
+++ b/src/rpc/chat/chat.pb.go
@@ -27,7 +27,7 @@ type ChatRequest struct {
 
 	ActorId    uint32 `protobuf:"varint,1,opt,name=actor_id,json=actorId,proto3" json:"actor_id,omitempty"`
 	UserId     uint32 `protobuf:"varint,2,opt,name=user_id,json=userId,proto3" json:"user_id,omitempty"`
-	PreMsgTime uint32 `protobuf:"varint,3,opt,name=pre_msg_time,json=preMsgTime,proto3" json:"pre_msg_time,omitempty"`
+	PreMsgTime uint64 `protobuf:"varint,3,opt,name=pre_msg_time,json=preMsgTime,proto3" json:"pre_msg_time,omitempty"`
 }
 
 func (x *ChatRequest) Reset() {
@@ -76,7 +76,7 @@ func (x *ChatRequest) GetUserId() uint32 {
 	return 0
 }
 
-func (x *ChatRequest) GetPreMsgTime() uint32 {
+func (x *ChatRequest) GetPreMsgTime() uint64 {
 	if x != nil {
 		return x.PreMsgTime
 	}
@@ -90,7 +90,7 @@ type Message struct {
 
 	Id         uint32  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
 	Content    string  `protobuf:"bytes,2,opt,name=content,proto3" json:"content,omitempty"`
-	CreateTime uint32  `protobuf:"varint,3,opt,name=create_time,json=createTime,proto3" json:"create_time,omitempty"`
+	CreateTime uint64  `protobuf:"varint,3,opt,name=create_time,json=createTime,proto3" json:"create_time,omitempty"`
 	FromUserId *uint32 `protobuf:"varint,4,opt,name=from_user_id,json=fromUserId,proto3,oneof" json:"from_user_id,omitempty"`
 	ToUserId   *uint32 `protobuf:"varint,5,opt,name=to_user_id,json=toUserId,proto3,oneof" json:"to_user_id,omitempty"`
 }
@@ -141,7 +141,7 @@ func (x *Message) GetContent() string {
 	return ""
 }
 
-func (x *Message) GetCreateTime() uint32 {
+func (x *Message) GetCreateTime() uint64 {
 	if x != nil {
 		return x.CreateTime
 	}
@@ -360,13 +360,13 @@ var file_chat_proto_rawDesc = []byte{
 	0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x07, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x49, 0x64,
 	0x12, 0x17, 0x0a, 0x07, 0x75, 0x73, 0x65, 0x72, 0x5f, 0x69, 0x64, 0x18, 0x02, 0x20, 0x01, 0x28,
 	0x0d, 0x52, 0x06, 0x75, 0x73, 0x65, 0x72, 0x49, 0x64, 0x12, 0x20, 0x0a, 0x0c, 0x70, 0x72, 0x65,
-	0x5f, 0x6d, 0x73, 0x67, 0x5f, 0x74, 0x69, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0d, 0x52,
+	0x5f, 0x6d, 0x73, 0x67, 0x5f, 0x74, 0x69, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x04, 0x52,
 	0x0a, 0x70, 0x72, 0x65, 0x4d, 0x73, 0x67, 0x54, 0x69, 0x6d, 0x65, 0x22, 0xbe, 0x01, 0x0a, 0x07,
 	0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20,
 	0x01, 0x28, 0x0d, 0x52, 0x02, 0x69, 0x64, 0x12, 0x18, 0x0a, 0x07, 0x63, 0x6f, 0x6e, 0x74, 0x65,
 	0x6e, 0x74, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e,
 	0x74, 0x12, 0x1f, 0x0a, 0x0b, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x5f, 0x74, 0x69, 0x6d, 0x65,
-	0x18, 0x03, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x0a, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x54, 0x69,
+	0x18, 0x03, 0x20, 0x01, 0x28, 0x04, 0x52, 0x0a, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x54, 0x69,
 	0x6d, 0x65, 0x12, 0x25, 0x0a, 0x0c, 0x66, 0x72, 0x6f, 0x6d, 0x5f, 0x75, 0x73, 0x65, 0x72, 0x5f,
 	0x69, 0x64, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0d, 0x48, 0x00, 0x52, 0x0a, 0x66, 0x72, 0x6f, 0x6d,
 	0x55, 0x73, 0x65, 0x72, 0x49, 0x64, 0x88, 0x01, 0x01, 0x12, 0x21, 0x0a, 0x0a, 0x74, 0x6f, 0x5f,
diff --git a/src/services/message/handler.go b/src/services/message/handler.go
index 32313ad..20af58a 100644
--- a/src/services/message/handler.go
+++ b/src/services/message/handler.go
@@ -222,7 +222,7 @@ func (c MessageServiceImpl) Chat(ctx context.Context, request *chat.ChatRequest)
 		rMessageList = append(rMessageList, &chat.Message{
 			Id:         pMessage.ID,
 			Content:    pMessage.Content,
-			CreateTime: uint32(pMessage.CreatedAt.Unix()),
+			CreateTime: uint64(pMessage.CreatedAt.UnixMicro()),
 			FromUserId: &pMessage.FromUserId,
 			ToUserId:   &pMessage.ToUserId,
 		})
diff --git a/src/services/publish/main.go b/src/services/publish/main.go
index 73b619e..9648fb9 100644
--- a/src/services/publish/main.go
+++ b/src/services/publish/main.go
@@ -35,7 +35,7 @@ func main() {
 	// Configure Pyroscope
 	profiling.InitPyroscope("GuGoTik.PublishService")
 
-	maxSize := 100 * 1024 * 1024
+	maxSize := 500 * 1024 * 1024
 	s := grpc.NewServer(
 		grpc.MaxRecvMsgSize(maxSize),
 		grpc.MaxSendMsgSize(maxSize),
diff --git a/src/web/models/Message.go b/src/web/models/Message.go
index 1634794..dcea8f9 100644
--- a/src/web/models/Message.go
+++ b/src/web/models/Message.go
@@ -24,7 +24,7 @@ type SMessageRes struct {
 type ListMessageReq struct {
 	ActorId    uint32 `form:"actor_id" binding:"required"`
 	ToUserId   uint32 `form:"to_user_id" binding:"required"`
-	PreMsgTime uint32 `form:"pre_msg_time"`
+	PreMsgTime uint64 `form:"pre_msg_time"`
 }
 
 type ListMessageRes struct {