diff --git a/include/config.hpp b/include/config.hpp
index 3d2b494..219cb40 100644
--- a/include/config.hpp
+++ b/include/config.hpp
@@ -19,7 +19,7 @@ enum class Gait : int {
 constexpr std::string_view NETWORK_INTERFACE = "eth0";
 
 // MQTT settings
-constexpr std::string_view MQTT_BROKER = "192.168.11.24";
+constexpr std::string_view MQTT_BROKER = "120.24.241.164";
 constexpr int MQTT_PORT = 1883;
 constexpr std::string_view MQTT_CLIENT_ID = "unitree_go2_client";
 constexpr std::string_view MQTT_USERNAME = "lzwc";
diff --git a/src/custom_robot.cpp b/src/custom_robot.cpp
index d2c8166..3dd7194 100644
--- a/src/custom_robot.cpp
+++ b/src/custom_robot.cpp
@@ -783,7 +783,7 @@ std::string CustomRobot::generateRandomClientId() const {
     std::stringstream ss;
     ss << "go2_client_";
     
-    // 生成8位随机十六进制字符
+    // 生成8位随机十六进制字符R
     for (int i = 0; i < 8; ++i) {
         ss << std::hex << dis(gen);
     }