diff --git a/src/client/UnoClient.cpp b/src/client/UnoClient.cpp
new file mode 100644
index 0000000..81f066e
--- /dev/null
+++ b/src/client/UnoClient.cpp
@@ -0,0 +1,136 @@
+/**
+ * @file
+ *
+ * @author Yuzhe Guo
+ * @date 2025.12.06
+ */
+#include "UnoClient.h"
+
+#include "../network/Message.h"
+#include "../network/MessageSerializer.h"
+
+#include <memory>
+#include <utility>
+
+namespace UNO::CLIENT {
+    void UnoClient::handleNetworkConnected()
+    {
+        NETWORK::JoinGamePayload messagePayload = {this->clientGameState_->getPlayerName()};
+        NETWORK::Message message                = {NETWORK::MessageStatus::OK, NETWORK::MessagePayloadType::JOIN_GAME, messagePayload};
+        networkClient_->send(NETWORK::MessageSerializer::serialize(message));
+
+        this->clientGameState_->setClientGameStageConnected();
+        gameUI_->updateUI(this->clientGameState_);
+    }
+
+    void UnoClient::handleNetworkInitGame(const NETWORK::InitGamePayload &payload)
+    {
+        this->clientGameState_->init(payload.players, payload.discardPile, payload.handCard, payload.currentPlayerIndex, payload.playerId);
+    }
+
+    void UnoClient::handleNetworkPlayCard(const NETWORK::PlayCardPayload &payload)
+    {
+        if (clientGameState_->getClientGameStage() == GAME::ClientGameStage::ACTIVE) {
+            clientGameState_->play(payload.card);
+        }
+        clientGameState_->updateStateByCard(payload.card);
+    }
+
+    void UnoClient::handleNetworkDrawCard(const NETWORK::DrawCardPayload &payload)
+    {
+        if (clientGameState_->getClientGameStage() == GAME::ClientGameStage::ACTIVE) {
+            clientGameState_->draw(payload.cards);
+        }
+        clientGameState_->updateStateByDraw();
+    }
+
+    void UnoClient::handleNetworkEndGame(const NETWORK::EndGamePayload &payload)
+    {
+        this->clientGameState_->endGame();
+    }
+
+    void UnoClient::handleNetworkMessage(const std::string &message)
+    {
+        auto networkMessage = NETWORK::MessageSerializer::deserialize(message);
+        if (networkMessage.getMessagePayloadType() == NETWORK::MessagePayloadType::INIT_GAME) {
+            this->handleNetworkInitGame(std::get<NETWORK::InitGamePayload>(networkMessage.getMessagePayload()));
+        }
+        if (networkMessage.getMessagePayloadType() == NETWORK::MessagePayloadType::DRAW_CARD) {
+            this->handleNetworkDrawCard(std::get<NETWORK::DrawCardPayload>(networkMessage.getMessagePayload()));
+        }
+        if (networkMessage.getMessagePayloadType() == NETWORK::MessagePayloadType::PLAY_CARD) {
+            this->handleNetworkPlayCard(std::get<NETWORK::PlayCardPayload>(networkMessage.getMessagePayload()));
+        }
+        if (networkMessage.getMessagePayloadType() == NETWORK::MessagePayloadType::END_GAME) {
+            this->handleNetworkEndGame(std::get<NETWORK::EndGamePayload>(networkMessage.getMessagePayload()));
+        }
+
+        if (networkMessage.getMessagePayloadType() == NETWORK::MessagePayloadType::EMPTY
+            || networkMessage.getMessagePayloadType() == NETWORK::MessagePayloadType::JOIN_GAME
+            || networkMessage.getMessagePayloadType() == NETWORK::MessagePayloadType::START_GAME) {
+            throw std::invalid_argument("Invalid message type from server");
+        }
+
+        gameUI_->updateUI(this->clientGameState_);
+    }
+
+    void UnoClient::handlePlayerAction(PlayerAction action)
+    {
+        if (action.playerActionType == PlayerActionType::CONNECT) {
+            this->handlePlayerConnect(std::get<PlayerConnectPayload>(action.payload));
+        }
+        if (action.playerActionType == PlayerActionType::START_GAME) {
+            this->handlePlayerStartGame(std::get<PlayerStartGamePayload>(action.payload));
+        }
+        if (action.playerActionType == PlayerActionType::PLAY_CARD) {
+            this->handlePlayerPlayCard(std::get<PlayerPlayCardPayload>(action.payload));
+        }
+        if (action.playerActionType == PlayerActionType::DRAW_CARD) {
+            this->handlePlayerDrawCard(std::get<PlayerDrawCardPayload>(action.payload));
+        }
+    }
+
+
+    void UnoClient::handlePlayerConnect(const PlayerConnectPayload &payload)
+    {
+        clientGameState_->setPlayerName(payload.playerName);
+        networkClient_->connect(payload.host, payload.port);
+    }
+
+
+    void UnoClient::handlePlayerStartGame(PlayerStartGamePayload payload)
+    {
+        NETWORK::StartGamePayload messagePayload = {};
+        NETWORK::Message message                 = {NETWORK::MessageStatus::OK, NETWORK::MessagePayloadType::START_GAME, messagePayload};
+        networkClient_->send(NETWORK::MessageSerializer::serialize(message));
+    }
+
+    void UnoClient::handlePlayerPlayCard(PlayerPlayCardPayload payload)
+    {
+        NETWORK::PlayCardPayload messagePayload = {payload.card};
+        NETWORK::Message message                = {NETWORK::MessageStatus::OK, NETWORK::MessagePayloadType::PLAY_CARD, messagePayload};
+        networkClient_->send(NETWORK::MessageSerializer::serialize(message));
+    }
+
+    void UnoClient::handlePlayerDrawCard(PlayerDrawCardPayload payload)
+    {
+        NETWORK::DrawCardPayload messagePayload = {};
+        NETWORK::Message message                = {NETWORK::MessageStatus::OK, NETWORK::MessagePayloadType::DRAW_CARD, messagePayload};
+        networkClient_->send(NETWORK::MessageSerializer::serialize(message));
+    }
+
+    UnoClient::UnoClient()
+    {
+        clientGameState_ = std::make_shared<GAME::ClientGameState>();
+        networkClient_   = std::make_shared<NETWORK::NetworkClient>(
+            [this]() { this->handleNetworkConnected(); }, [this](const std::string &message) { this->handleNetworkMessage(message); });
+        gameUI_ = std::make_shared<UI::GameUI>([this](const PlayerAction &action) { this->handlePlayerAction(action); });
+    }
+
+    void UnoClient::run()
+    {
+        networkThread_ = std::thread([this]() { this->networkClient_->run(); });
+        gameUI_->run();
+    }
+
+}   // namespace UNO::CLIENT
\ No newline at end of file
diff --git a/src/client/UnoClient.h b/src/client/UnoClient.h
new file mode 100644
index 0000000..865670d
--- /dev/null
+++ b/src/client/UnoClient.h
@@ -0,0 +1,51 @@
+/**
+ * @file UnoClient.h
+ *
+ * @author Yuzhe Guo
+ * @date 2025.12.06
+ */
+#pragma once
+#include "../game/GameState.h"
+#include "../network/Message.h"
+#include "../network/NetworkClient.h"
+#include "../ui/GameUI.h"
+#include "PlayerAction.h"
+
+#include <memory>
+#include <thread>
+
+
+namespace UNO::CLIENT {
+    class UnoClient {
+    private:
+        std::shared_ptr<GAME::ClientGameState> clientGameState_;
+        std::shared_ptr<UI::GameUI> gameUI_;
+        std::shared_ptr<NETWORK::NetworkClient> networkClient_;
+
+        std::thread networkThread_;
+
+    private:
+        void handleNetworkConnected();
+
+        void handleNetworkMessage(const std::string &message);
+
+        void handleNetworkInitGame(const NETWORK::InitGamePayload &payload);
+        void handleNetworkPlayCard(const NETWORK::PlayCardPayload &payload);
+        void handleNetworkDrawCard(const NETWORK::DrawCardPayload &payload);
+        void handleNetworkEndGame(const NETWORK::EndGamePayload &payload);
+
+
+        void handlePlayerAction(PlayerAction action);
+
+        void handlePlayerConnect(const PlayerConnectPayload &payload);
+        void handlePlayerStartGame(PlayerStartGamePayload payload);
+        void handlePlayerPlayCard(PlayerPlayCardPayload payload);
+        void handlePlayerDrawCard(PlayerDrawCardPayload payload);
+
+    public:
+        UnoClient();
+
+        void run();
+    };
+
+}   // namespace UNO::CLIENT
\ No newline at end of file
diff --git a/src/client/main.cpp b/src/client/main.cpp
new file mode 100644
index 0000000..9eb931d
--- /dev/null
+++ b/src/client/main.cpp
@@ -0,0 +1,16 @@
+#include "UnoClient.h"
+
+#include <windows.h>
+
+int main()
+{
+    UNO::CLIENT::UnoClient client;
+    client.run();
+    return 0;
+}
+
+int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
+{
+    main();
+    return 0;
+}
\ No newline at end of file