diff --git a/gradle.properties b/gradle.properties
index 0d0d3d7..71df9f7 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -8,7 +8,7 @@ loader_version=0.19.3
 
 
 # Mod Properties
-mod_version=2.0
+mod_version=2.1
 maven_group=io.ib67
 archives_base_name=sfcraft
 
diff --git a/server-deploy/overrides/sfcraft/announcements/0_firstjoin_welcome.txt b/server-deploy/overrides/sfcraft/announcements/0_firstjoin_welcome.txt
new file mode 100644
index 0000000..bf99531
--- /dev/null
+++ b/server-deploy/overrides/sfcraft/announcements/0_firstjoin_welcome.txt
@@ -0,0 +1,8 @@
+§a§l欢迎加入 SaltedFish Club Server!
+§a在游玩时，请注意以下事项：
+ - 未经允许，请不要破坏/偷窃已有设施内的资源。
+ - 服务器有一些非原版特性，具体请看：
+  https://sfclub.cc/~sfcraft/vanilla/
+ - 你可以邀请其他玩家加入游戏，但你将视为对他做担保。
+§7如果您想邀请朋友加入服务器, 可以向管理员提出申请
+§7此外, 本服务器无密码登录，盗版账号安全责任自负。
\ No newline at end of file
diff --git a/server-deploy/overrides/sfcraft/announcements/2.1_update.txt b/server-deploy/overrides/sfcraft/announcements/2.1_update.txt
new file mode 100644
index 0000000..1d0f99d
--- /dev/null
+++ b/server-deploy/overrides/sfcraft/announcements/2.1_update.txt
@@ -0,0 +1,10 @@
+§d§lSFCraft 已更新到 2.1。
+
+§a主要改动：
+ - 修复了 /reco 指令无法使用的问题
+ - 铁砧现在可以用于生成网络图片画
+ - 修复了拉屎的判定逻辑
+ - 重写了 wiki 的大量页面
+
+具体信息请查阅我们的更新日志：
+§bhttps://sfclub.cc/~sfcraft/changelog/2026-08-04/
\ No newline at end of file
diff --git a/src/main/java/io/ib67/sfcraft/config/SFConfig.java b/src/main/java/io/ib67/sfcraft/config/SFConfig.java
index cf0162d..8339f01 100644
--- a/src/main/java/io/ib67/sfcraft/config/SFConfig.java
+++ b/src/main/java/io/ib67/sfcraft/config/SFConfig.java
@@ -12,7 +12,7 @@ public class SFConfig {
     public String domain = "localhost";
     public int port = 25565;
     public String webApiBase = "localhost";
-    public String serverSecret = RandomStringUtils.random(32);
+    public String serverSecret = RandomStringUtils.secure().next(32);
     public int httpPort = 8080;
     public long maxSchematicSize = 10240000;
 }
diff --git a/src/main/java/io/ib67/sfcraft/module/room/CreativeRoomModule.java b/src/main/java/io/ib67/sfcraft/module/room/CreativeRoomModule.java
index f0ac79a..6744f19 100644
--- a/src/main/java/io/ib67/sfcraft/module/room/CreativeRoomModule.java
+++ b/src/main/java/io/ib67/sfcraft/module/room/CreativeRoomModule.java
@@ -176,7 +176,7 @@ public class CreativeRoomModule extends ServerModule {
                 .append(Component.translatable("message.sfcraft.playground.features_list").withColor(Color.MAGENTA.getRGB())));
         player.sendSystemMessage(Component.nullToEmpty("    "));
         player.sendSystemMessage(Component.translatable("message.sfcraft.playground.upload_hint").withColor(CommonColors.GRAY)
-                .append(Component.literal("https://github.com/saltedfishclub/sfcraft-schematics").withColor(CommonColors.GRAY).withStyle(it -> it.withUnderlined(true))));
+                .append(Component.literal("/upload schematic").withColor(CommonColors.BLUE).withStyle(it -> it.withUnderlined(true))));
         player.sendSystemMessage(Component.translatable("message.sfcraft.playground.mobs_no_escape").withColor(CommonColors.GRAY));
         player.sendSystemMessage(Component.translatable("message.sfcraft.playground.how_to_leave").withColor(CommonColors.GRAY));
         player.setGameMode(GameType.CREATIVE);
diff --git a/src/main/resources/assets/sfcraft/lang/en_us.json b/src/main/resources/assets/sfcraft/lang/en_us.json
index 362a337..b7865b2 100644
--- a/src/main/resources/assets/sfcraft/lang/en_us.json
+++ b/src/main/resources/assets/sfcraft/lang/en_us.json
@@ -53,7 +53,7 @@
   "message.sfcraft.playground.only_here": "You can only use this in playground!",
   "message.sfcraft.playground.welcome": "You are now in the creative playground. Use //schem list to view available schematics.",
   "message.sfcraft.playground.features_available": "The following features are now available: ",
-  "message.sfcraft.playground.features_list": "/player /track /summon /setblock /gamerule and all WorldEdit commands.",
+  "message.sfcraft.playground.features_list": "/player /track /summon /setblock /gm (gamemode) /pt (teleport) /polymer creative and all WorldEdit commands.",
   "message.sfcraft.playground.upload_hint": "How to upload schematics to the playground: ",
   "message.sfcraft.playground.mobs_no_escape": "Mobs in the playground cannot escape to other dimensions.",
   "message.sfcraft.playground.how_to_leave": "Use /reco or rejoin the game to leave.",
diff --git a/src/main/resources/assets/sfcraft/lang/zh_cn.json b/src/main/resources/assets/sfcraft/lang/zh_cn.json
index 329659d..f265da1 100644
--- a/src/main/resources/assets/sfcraft/lang/zh_cn.json
+++ b/src/main/resources/assets/sfcraft/lang/zh_cn.json
@@ -53,7 +53,7 @@
   "message.sfcraft.playground.only_here": "只能在游乐园中使用此功能！",
   "message.sfcraft.playground.welcome": "你现在正在创造游乐园中，使用 //schem list 查看可用投影。",
   "message.sfcraft.playground.features_available": "以下功能现在可用：",
-  "message.sfcraft.playground.features_list": "/player /track /summon /setblock /gamerule 及 WorldEdit 的所有命令。",
+  "message.sfcraft.playground.features_list": "/player /track /summon /setblock /gm (gamemode) /pt (teleport) 及 WorldEdit 的所有命令。",
   "message.sfcraft.playground.upload_hint": "如何上传投影到游乐场: ",
   "message.sfcraft.playground.mobs_no_escape": "游乐园中的生物不能逃逸到其他维度。",
   "message.sfcraft.playground.how_to_leave": "使用 /reco 或重新加入游戏即可离开。",