diff --git a/core/src/main/java/com/xujiayao/discord_mc_chat/commands/impl/ConsoleCommand.java b/core/src/main/java/com/xujiayao/discord_mc_chat/commands/impl/ConsoleCommand.java
index df362e12..80a2ce90 100644
--- a/core/src/main/java/com/xujiayao/discord_mc_chat/commands/impl/ConsoleCommand.java
+++ b/core/src/main/java/com/xujiayao/discord_mc_chat/commands/impl/ConsoleCommand.java
@@ -247,7 +247,7 @@ public class ConsoleCommand implements Command {
 				} else {
 					String[] lines = response.response.split("\n");
 					for (String line : lines) {
-						sender.reply("[" + serverName + "] " + line);
+						sender.reply(I18nManager.getDmccTranslation("commands.remote_result_prefix", serverName, line));
 					}
 				}
 			} catch (Exception e) {
diff --git a/core/src/main/java/com/xujiayao/discord_mc_chat/commands/impl/ExecuteCommand.java b/core/src/main/java/com/xujiayao/discord_mc_chat/commands/impl/ExecuteCommand.java
index 07887858..ded3f4a5 100644
--- a/core/src/main/java/com/xujiayao/discord_mc_chat/commands/impl/ExecuteCommand.java
+++ b/core/src/main/java/com/xujiayao/discord_mc_chat/commands/impl/ExecuteCommand.java
@@ -172,11 +172,11 @@ public class ExecuteCommand implements Command {
 				} else {
 					// Terminal: send result directly
 					if (response.fileData != null && response.fileName != null) {
-						sender.replyWithFile("[" + serverName + "] " + response.response, response.fileData, response.fileName);
+						sender.replyWithFile(I18nManager.getDmccTranslation("commands.remote_result_prefix", serverName, response.response), response.fileData, response.fileName);
 					} else {
 						String[] lines = response.response.split("\n");
 						for (String line : lines) {
-							sender.reply("[" + serverName + "] " + line);
+							sender.reply(I18nManager.getDmccTranslation("commands.remote_result_prefix", serverName, line));
 						}
 					}
 				}
diff --git a/core/src/main/java/com/xujiayao/discord_mc_chat/server/ServerHandler.java b/core/src/main/java/com/xujiayao/discord_mc_chat/server/ServerHandler.java
index 18bb8d80..7e4b41ff 100644
--- a/core/src/main/java/com/xujiayao/discord_mc_chat/server/ServerHandler.java
+++ b/core/src/main/java/com/xujiayao/discord_mc_chat/server/ServerHandler.java
@@ -106,7 +106,7 @@ public class ServerHandler extends SimpleChannelInboundHandler<Packet> {
 								DiscordManager.clientBroadcast(clientName, "player.die", "player.die", false, p.placeholders);
 						case PLAYER_ADVANCEMENT ->
 								DiscordManager.clientBroadcast(clientName, "player.advancement", "player.advancement." + p.placeholders.get("type"), false, p.placeholders);
-						// Unhandled events
+						// TODO Unhandled events
 						default ->
 								LOGGER.warn("Received MinecraftEventPacket from authenticated client {}: type={}, placeholders={}", clientName, p.type, p.placeholders);
 					}
diff --git a/core/src/main/java/com/xujiayao/discord_mc_chat/server/discord/DiscordManager.java b/core/src/main/java/com/xujiayao/discord_mc_chat/server/discord/DiscordManager.java
index 666e1375..106b4893 100644
--- a/core/src/main/java/com/xujiayao/discord_mc_chat/server/discord/DiscordManager.java
+++ b/core/src/main/java/com/xujiayao/discord_mc_chat/server/discord/DiscordManager.java
@@ -221,7 +221,7 @@ public class DiscordManager {
 				try {
 					doUpdateBotPresence(enableStatus, enableActivity);
 				} catch (Exception e) {
-					LOGGER.warn("Failed to update bot presence: " + e.getMessage());
+					LOGGER.warn(I18nManager.getDmccTranslation("discord.manager.presence_update_failed", e.getMessage()));
 				}
 			}, 0, 30, TimeUnit.SECONDS);
 		}
diff --git a/core/src/main/java/com/xujiayao/discord_mc_chat/server/linking/OpSyncManager.java b/core/src/main/java/com/xujiayao/discord_mc_chat/server/linking/OpSyncManager.java
index ecffa671..c0fcf2e1 100644
--- a/core/src/main/java/com/xujiayao/discord_mc_chat/server/linking/OpSyncManager.java
+++ b/core/src/main/java/com/xujiayao/discord_mc_chat/server/linking/OpSyncManager.java
@@ -9,6 +9,7 @@ import com.xujiayao.discord_mc_chat.utils.config.ConfigManager;
 import com.xujiayao.discord_mc_chat.utils.config.ModeManager;
 import com.xujiayao.discord_mc_chat.utils.events.CoreEvents;
 import com.xujiayao.discord_mc_chat.utils.events.EventManager;
+import com.xujiayao.discord_mc_chat.utils.i18n.I18nManager;
 import net.dv8tion.jda.api.entities.Member;
 import net.dv8tion.jda.api.entities.User;
 
@@ -117,7 +118,7 @@ public class OpSyncManager {
 				return OpLevelResolver.resolve(member, user);
 			}
 		} catch (Exception e) {
-			LOGGER.warn("Failed to resolve OP level for Discord user {}: {}", discordId, e.getMessage());
+			LOGGER.warn(I18nManager.getDmccTranslation("linking.op_sync.resolve_failed", discordId, e.getMessage()));
 			return -1;
 		}
 	}
diff --git a/core/src/main/resources/lang/en_us.yml b/core/src/main/resources/lang/en_us.yml
index ba9d066f..3e32e12e 100644
--- a/core/src/main/resources/lang/en_us.yml
+++ b/core/src/main/resources/lang/en_us.yml
@@ -17,6 +17,7 @@ commands:
   execution_failed: "Command execution failed: {}"
   invalid_usage: "Invalid usage. Correct usage: \"{}\""
   insufficient_permission: "You do not have enough permissions to execute this command."
+  remote_result_prefix: "[{}] {}"
   console:
     description: "Execute a Minecraft command"
     args_desc:
@@ -172,6 +173,7 @@ discord:
     registering_commands: "Registering Discord DMCC commands. This may take a while... (should be within 1 minute)"
     commands_success: "Discord DMCC commands registered successfully!"
     commands_failed: "Failed to register Discord DMCC commands."
+    presence_update_failed: "Failed to update bot presence: {}"
     channel_not_found: "Discord text channel not found: \"{}\""
     channel_cannot_talk: "Cannot send messages in Discord text channel: \"{}\""
     insufficient_permission: "Discord bot has insufficient permissions in channel {}: \"{}\""
@@ -293,6 +295,8 @@ linking:
     generated: "Generated account linking verification code for Minecraft player {}."
     refreshed: "Refreshed account linking verification code validity for Minecraft player {}."
     consumed: "Minecraft player {} completed account linking."
+  op_sync:
+    resolve_failed: "Failed to resolve OP level for Discord user {}: {}"
   message:
     not_linked_1: "You are not linked to a Discord user. Use "
     not_linked_2: " command on Discord to complete linking. The code expires in 5 minutes. Run "
diff --git a/core/src/main/resources/lang/zh_cn.yml b/core/src/main/resources/lang/zh_cn.yml
index 464d5a82..79109621 100644
--- a/core/src/main/resources/lang/zh_cn.yml
+++ b/core/src/main/resources/lang/zh_cn.yml
@@ -17,6 +17,7 @@ commands:
   execution_failed: "命令执行失败：{}"
   invalid_usage: "用法错误。正确用法：\"{}\""
   insufficient_permission: "你没有足够的权限执行此命令。"
+  remote_result_prefix: "[{}] {}"
   console:
     description: "执行 Minecraft 命令"
     args_desc:
@@ -172,6 +173,7 @@ discord:
     registering_commands: "正在注册 Discord DMCC 命令。这可能需要一段时间...（理应在 1 分钟以内）"
     commands_success: "Discord DMCC 命令注册成功！"
     commands_failed: "注册 Discord DMCC 命令失败。"
+    presence_update_failed: "更新机器人状态失败：{}"
     channel_not_found: "未找到 Discord 文字频道：\"{}\""
     channel_cannot_talk: "无法在 Discord 文字频道中发送消息：\"{}\""
     insufficient_permission: "Discord 机器人在频道 {} 中权限不足：\"{}\""
@@ -293,6 +295,8 @@ linking:
     generated: "已为 Minecraft 玩家 {} 生成账户绑定验证码。"
     refreshed: "已刷新 Minecraft 玩家 {} 的账户绑定验证码有效期。"
     consumed: "Minecraft 玩家 {} 完成了账户绑定。"
+  op_sync:
+    resolve_failed: "解析 Discord 用户 {} 的 OP 等级失败：{}"
   message:
     not_linked_1: "你尚未绑定 Discord 用户。在 Discord 上使用 "
     not_linked_2: " 命令完成绑定。验证码将在 5 分钟后过期，届时可在游戏内执行 "