diff --git a/module/gamefree/bytearray.pyi b/module/gamefree/bytearray.pyi
index f4900a450..efb2f516e 100644
--- a/module/gamefree/bytearray.pyi
+++ b/module/gamefree/bytearray.pyi
@@ -17,6 +17,12 @@ class ByteArray:
     def writeUInt(self, data: ctypes.c_uint) -> ByteArray:
         ...
 
+    def writeUInt8(self, data: ctypes.c_uint8) -> ByteArray:
+        ...
+
+    def writeUInt16(self, data: ctypes.c_uint16) -> ByteArray:
+        ...
+
     def writeLong(self, data: ctypes.c_long) -> ByteArray:
         ...
 
diff --git a/module/gamefree/bytearray/ByteArray.cpp b/module/gamefree/bytearray/ByteArray.cpp
index d386d7dcd..0506d40ac 100644
--- a/module/gamefree/bytearray/ByteArray.cpp
+++ b/module/gamefree/bytearray/ByteArray.cpp
@@ -21,6 +21,14 @@ void ByteArray::writeUInt(unsigned int data) {
     writeNumber(data);
 }
 
+void ByteArray::writeUInt8(unsigned _int8 data) {
+    writeNumber(data);
+}
+
+void ByteArray::writeUInt16(unsigned _int16 data) {
+    writeNumber(data);
+}
+
 void ByteArray::writeLong(long data) {
     writeNumber(data);
 }
diff --git a/module/gamefree/bytearray/ByteArray.hpp b/module/gamefree/bytearray/ByteArray.hpp
index 07e920ea6..fd4a64ad5 100644
--- a/module/gamefree/bytearray/ByteArray.hpp
+++ b/module/gamefree/bytearray/ByteArray.hpp
@@ -25,6 +25,10 @@ public:
 
     void writeUInt(unsigned int data);
 
+    void writeUInt8(unsigned _int8 data);
+
+    void writeUInt16(unsigned _int16 data);
+
     void writeLong(long data);
 
     void writeLongLong(long long data);
diff --git a/module/gamefree/bytearray/PyByteArray.cpp b/module/gamefree/bytearray/PyByteArray.cpp
index 27a396d10..424167a66 100644
--- a/module/gamefree/bytearray/PyByteArray.cpp
+++ b/module/gamefree/bytearray/PyByteArray.cpp
@@ -20,6 +20,16 @@ PyByteArray& PyByteArray::writeUInt(unsigned int data) {
     return *this;
 }
 
+PyByteArray& PyByteArray::writeUInt8(unsigned _int8 data) {
+    m_data.writeUInt8(data);
+    return *this;
+}
+
+PyByteArray& PyByteArray::writeUInt16(unsigned _int16 data) {
+    m_data.writeUInt16(data);
+    return *this;
+}
+
 PyByteArray& PyByteArray::writeLong(long data) {
     m_data.writeLong(data);
     return *this;
diff --git a/module/gamefree/bytearray/PyByteArray.hpp b/module/gamefree/bytearray/PyByteArray.hpp
index cda4a28b6..ddfa8f8cb 100644
--- a/module/gamefree/bytearray/PyByteArray.hpp
+++ b/module/gamefree/bytearray/PyByteArray.hpp
@@ -15,6 +15,10 @@ public:
 
     PyByteArray& writeUInt(unsigned int data);
 
+    PyByteArray& writeUInt8(unsigned _int8 data);
+
+    PyByteArray& writeUInt16(unsigned _int16 data);
+
     PyByteArray& writeLong(long data);
 
     PyByteArray& writeLongLong(long long data);
diff --git a/module/gamefree/bytearray/module.cpp b/module/gamefree/bytearray/module.cpp
index ca10a30d3..d5ba7d5c1 100644
--- a/module/gamefree/bytearray/module.cpp
+++ b/module/gamefree/bytearray/module.cpp
@@ -11,6 +11,8 @@ PYBIND11_MODULE(bytearray, m) {
             .def("writeUChar", &PyByteArray::writeUChar)
             .def("writeInt", &PyByteArray::writeInt)
             .def("writeUInt", &PyByteArray::writeUInt)
+            .def("writeUInt8", &PyByteArray::writeUInt8)
+            .def("writeUInt16", &PyByteArray::writeUInt16)
             .def("writeLong", &PyByteArray::writeLong)
             .def("writeLongLong", &PyByteArray::writeLongLong)
             .def("writeULong", &PyByteArray::writeULong)
diff --git a/module/gamefree/gamedata.py b/module/gamefree/gamedata.py
new file mode 100644
index 000000000..fe04b2694
--- /dev/null
+++ b/module/gamefree/gamedata.py
@@ -0,0 +1,16 @@
+class AzurLaneGameDataManager:
+    instance = None
+
+    def __init__(self):
+        ...
+
+    @staticmethod
+    def get_instance() -> "AzurLaneGameDataManager":
+        if AzurLaneGameDataManager.instance is None:
+            AzurLaneGameDataManager.instance = AzurLaneGameDataManager()
+        return AzurLaneGameDataManager.instance
+
+
+class AzurLaneGameData:
+    def __init__(self):
+        self.game_data = AzurLaneGameDataManager.get_instance()
diff --git a/module/gamefree/netpkg.py b/module/gamefree/netpkg.py
new file mode 100644
index 000000000..174334cf3
--- /dev/null
+++ b/module/gamefree/netpkg.py
@@ -0,0 +1,37 @@
+import threading
+
+from google.protobuf import message
+import module.gamefree.bytearray as ba
+
+class AzurLaneNetworkEndPackage:
+    ...
+
+
+class AzurLaneNetworkPackage:
+
+    def __init__(self, id, proto_message: message.Message):
+        self.event = threading.Event()
+        self.proto_message = proto_message
+        self.id = id
+        self.returned_data: bytes = None
+
+    def pack(self) -> bytes:
+        buffer = ba.ByteArray()
+
+        serialized = self.proto_message.SerializeToString()
+        serialized_len = len(serialized)
+        if serialized_len == 0:
+            buffer.writeUInt16(6)
+        else:
+            buffer.writeUInt16(5 + serialized_len)
+
+        buffer.writeUInt8(0)
+        buffer.writeUInt16(self.id)
+        buffer.writeUInt16(0)
+        buffer.writeString(serialized)
+
+        return buffer.toBytes()
+
+
+class HeartBeatPackage:
+    ...
\ No newline at end of file
diff --git a/module/gamefree/network.py b/module/gamefree/network.py
new file mode 100644
index 000000000..18199b3bb
--- /dev/null
+++ b/module/gamefree/network.py
@@ -0,0 +1,93 @@
+import socket
+import threading
+import time
+from queue import Queue
+from module.gamefree.netpkg import *
+from module.logger import logger
+
+
+class AzurLaneNetworkClient:
+    instance = None
+
+    def __init__(self):
+        self.task_queue = Queue()
+        self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.worker: threading.Thread = None
+        self.heartbeater: threading.Thread = None
+        self.heartbeat_thread_event = threading.Event()
+
+    def __del__(self):
+        self.stop_work()
+
+    def connect(self, addr, port):
+        self.server_socket.connect((addr, port))
+
+    def transfer(self, pkg: AzurLaneNetworkPackage) -> bytes:
+        self.server_socket.send(pkg.pack())
+        buffer = ba.ByteArray()
+        while 1:
+            returned_data = self.server_socket.recv(1024)
+            if returned_data == 0:
+                break
+            buffer.writeBytes(returned_data)
+        return buffer.toBytes()
+
+    def start_heartbeat(self):
+        if self.heartbeater is not None:
+            if self.heartbeater.is_alive():
+                return
+        self.heartbeater = threading.Thread(target=self.work_thread)
+        self.heartbeater.start()
+
+    def start_work(self):
+        if self.worker is not None:
+            if self.worker.is_alive():
+                return
+        self.worker = threading.Thread(target=self.work_thread)
+        self.worker.start()
+
+    def stop_work(self):
+        self.heartbeat_thread_event.set()
+        self.task_queue.queue.clear()
+        self.task_queue.put(AzurLaneNetworkEndPackage())
+
+    def work_thread(self):
+        while 1:
+            pkg = self.task_queue.get()
+            if isinstance(pkg, AzurLaneNetworkEndPackage):
+                break
+            elif isinstance(pkg, AzurLaneNetworkPackage):
+                data = self.transfer(pkg)
+                pkg.returned_data = data
+                pkg.event.set()
+            else:
+                logger.warning(f"Unknown net package class: {type(pkg).__name__}")
+
+    def heartbeat_thread(self):
+        while 1:
+            if self.heartbeat_thread_event.is_set():
+                break
+            self.task_queue.put(HeartBeatPackage())
+            if self.heartbeat_thread_event.is_set():
+                break
+            time.sleep(1)
+
+    def queue_package(self, pkg):
+        self.task_queue.put(pkg)
+
+    @staticmethod
+    def get_instance() -> "AzurLaneNetworkClient":
+        if AzurLaneNetworkClient.instance is None:
+            AzurLaneNetworkClient.instance = AzurLaneNetworkClient()
+        return AzurLaneNetworkClient.instance
+
+
+class AzurLaneNetwork:
+    def __init__(self):
+        self.client = AzurLaneNetworkClient.get_instance()
+
+    def send(self, pkg: AzurLaneNetworkPackage) -> bytes:
+        self.client.queue_package(pkg)
+        pkg.event.wait()
+        return pkg.returned_data
+