diff --git a/README.md b/README.md
index aaeaa87..76097e6 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ PORT=3333 tnt    # via env var
 ### Connecting
 
 ```sh
-ssh -p 2222 chat.m1ng.space
+ssh -p 2222 chat.example.com
 ```
 
 **Anonymous access by default**: Users can connect with ANY username/password (or empty password). No SSH keys required. Perfect for public chat servers.
@@ -127,7 +127,7 @@ TNT_BIND_ADDR=192.168.1.100 tnt
 TNT_STATE_DIR=/var/lib/tnt tnt
 
 # Show the public SSH endpoint in startup logs
-TNT_PUBLIC_HOST=chat.m1ng.space tnt
+TNT_PUBLIC_HOST=chat.example.com tnt
 
 # Choose interactive UI language (en or zh; defaults from locale)
 TNT_LANG=zh tnt
@@ -173,12 +173,12 @@ tnt -p 2222
 TNT also exposes a small non-interactive SSH surface for scripts:
 
 ```sh
-ssh -p 2222 chat.m1ng.space health
-ssh -p 2222 chat.m1ng.space stats --json
-ssh -p 2222 chat.m1ng.space users
-ssh -p 2222 chat.m1ng.space "tail -n 20"
-ssh -p 2222 operator@chat.m1ng.space post "service notice"
-ssh -p 2222 chat.m1ng.space post "/me deploys v2.0"
+ssh -p 2222 chat.example.com health
+ssh -p 2222 chat.example.com stats --json
+ssh -p 2222 chat.example.com users
+ssh -p 2222 chat.example.com "tail -n 20"
+ssh -p 2222 operator@chat.example.com post "service notice"
+ssh -p 2222 chat.example.com post "/me deploys v2.0"
 ```
 
 **`post` identity**: the message is attributed to the SSH login name (the `user@` part of the URL, falling back to `anonymous`). In the default anonymous-access configuration there is no identity check, so any client can post as any name. Set `TNT_ACCESS_TOKEN` if you need authenticated posting.
@@ -297,7 +297,7 @@ TNT_MAX_CONN_PER_IP=30
 TNT_MAX_CONN_RATE_PER_IP=60
 TNT_RATE_LIMIT=1
 TNT_SSH_LOG_LEVEL=0
-TNT_PUBLIC_HOST=chat.m1ng.space
+TNT_PUBLIC_HOST=chat.example.com
 EOF
 ```
 
diff --git a/docs/ANONYMOUS_ACCESS_SUMMARY.md b/docs/ANONYMOUS_ACCESS_SUMMARY.md
index 9b34d6e..72947fc 100644
--- a/docs/ANONYMOUS_ACCESS_SUMMARY.md
+++ b/docs/ANONYMOUS_ACCESS_SUMMARY.md
@@ -47,7 +47,7 @@
 **用户体验：**
 ```bash
 # 用户连接（零配置）
-ssh -p 2222 chat.m1ng.space
+ssh -p 2222 chat.example.com
 # 输入任意内容或直接按回车
 # 开始聊天！
 ```
@@ -143,7 +143,7 @@ ssh -p 2222 chat.m1ng.space
 tnt
 
 # 用户端（任何人）
-ssh -p 2222 chat.m1ng.space
+ssh -p 2222 chat.example.com
 # 输入任何内容作为密码或直接回车
 # 选择显示名称（可留空）
 # 开始聊天！
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index e1a1083..ed8afb2 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -19,6 +19,8 @@
   `ssh_server.c` / inline-`strcmp` instructions.
 - `exec_catalog` now owns SSH exec command matching as well as help metadata,
   reducing duplicate command knowledge in `src/exec.c`.
+- Replaced hard-coded `chat.m1ng.space` examples with `chat.example.com` so
+  public documentation does not imply a specific production host.
 - Renamed the internal language state from help-oriented names to
   UI-language names (`ui_lang_t`, `client->ui_lang`, and
   `i18n_*_ui_lang`) so future i18n work has a correctly named seam.
diff --git a/docs/DEPLOYMENT.md b/docs/DEPLOYMENT.md
index e9dc7b9..cf7aae4 100644
--- a/docs/DEPLOYMENT.md
+++ b/docs/DEPLOYMENT.md
@@ -54,7 +54,7 @@ TNT_MAX_CONN_PER_IP=30
 TNT_MAX_CONN_RATE_PER_IP=60
 TNT_RATE_LIMIT=1
 TNT_SSH_LOG_LEVEL=0
-TNT_PUBLIC_HOST=chat.m1ng.space
+TNT_PUBLIC_HOST=chat.example.com
 EOF
 
 sudo systemctl restart tnt
diff --git a/docs/EASY_SETUP.md b/docs/EASY_SETUP.md
index 4ce4229..de4426c 100644
--- a/docs/EASY_SETUP.md
+++ b/docs/EASY_SETUP.md
@@ -25,7 +25,7 @@ tnt              # 监听 2222 端口
 用户只需要一个SSH客户端即可，无需任何配置：
 
 ```bash
-ssh -p 2222 chat.m1ng.space
+ssh -p 2222 chat.example.com
 ```
 
 **重要提示**：
@@ -125,7 +125,7 @@ That's it! Your server is now running.
 Users only need an SSH client, no configuration required:
 
 ```bash
-ssh -p 2222 chat.m1ng.space
+ssh -p 2222 chat.example.com
 ```
 
 **Important**:
@@ -216,7 +216,7 @@ TNT_ACCESS_TOKEN="your_secret_password" tnt
 tnt
 
 # 用户连接（从任何机器）
-ssh -p 2222 chat.m1ng.space
+ssh -p 2222 chat.example.com
 # 输入任意密码或直接回车
 # 输入显示名称或留空
 # 开始聊天！