diff --git a/.env.example b/.env.example
index 6341569..b97d29e 100644
--- a/.env.example
+++ b/.env.example
@@ -11,7 +11,7 @@ PUBLIC_PATH=change-me-random-hash-path
 # 例如：https://sub.example.com
 PUBLIC_BASE_URL=
 
-# airport-a / airport-b 都会自动识别：
+# airport-a / airport-b / airport-c 都会自动识别：
 # 1. Clash/Mihomo YAML proxies 文件
 # 2. base64 编码 URI 订阅
 # 3. 直接明文 URI 订阅
@@ -21,3 +21,5 @@ PUBLIC_BASE_URL=
 AIRPORT_A_URL=
 # 允许留空；留空时该机场会自动跳过，不参与默认查询
 AIRPORT_B_URL=
+# 允许留空；留空时该机场会自动跳过，不参与默认查询
+AIRPORT_C_URL=
diff --git a/README.md b/README.md
index 9872189..2d54a0b 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 
 这一版已经补上：
 
-- 多机场源选择：`?sources=airport-a,airport-b`
+- 多机场源选择：`?sources=airport-a,airport-b,airport-c`
 - 单机场或多机场时，**始终取第一个源**的 `Subscription-Userinfo` 返回给客户端
 - `GET` 和 `HEAD` 都支持
 - provider 单源输出、merged provider 输出、thin client 输出、bundle 输出
@@ -69,7 +69,7 @@ cp .env.example .env
 
 - `PUBLIC_PATH` 改成足够长的随机字符串
 - `PUBLIC_BASE_URL` 建议填写你反代后的最终访问地址，例如 `https://sub.example.com`
-- `AIRPORT_A_URL` / `AIRPORT_B_URL` 都可以直接填订阅地址，项目会自动判断是 YAML 还是 URI 订阅
+- `AIRPORT_A_URL` / `AIRPORT_B_URL` / `AIRPORT_C_URL` 都可以直接填订阅地址，项目会自动判断是 YAML 还是 URI 订阅
 - 也可以直接填本地文件路径，例如 `/app/data/sources/airport-b.txt` 或 `file:///app/data/sources/airport-b.txt`
 - 允许把其中一个留空；留空时这个机场会自动跳过
 
@@ -85,15 +85,15 @@ docker compose up -d --build
 - 单 provider：
   `https://YOUR_DOMAIN/<PUBLIC_PATH>/providers/airport-a.yaml`
 - merged provider：
-  `https://YOUR_DOMAIN/<PUBLIC_PATH>/providers/merged.yaml?sources=airport-a,airport-b`
+  `https://YOUR_DOMAIN/<PUBLIC_PATH>/providers/merged.yaml?sources=airport-a,airport-b,airport-c`
 - Mihomo/OpenClash 薄壳入口：
-  `https://YOUR_DOMAIN/<PUBLIC_PATH>/clients/mihomo.yaml?sources=airport-a,airport-b`
+  `https://YOUR_DOMAIN/<PUBLIC_PATH>/clients/mihomo.yaml?sources=airport-a,airport-b,airport-c`
 - Stash 薄壳入口：
-  `https://YOUR_DOMAIN/<PUBLIC_PATH>/clients/stash.yaml?sources=airport-a,airport-b`
+  `https://YOUR_DOMAIN/<PUBLIC_PATH>/clients/stash.yaml?sources=airport-a,airport-b,airport-c`
 - Mihomo/OpenClash bundle：
-  `https://YOUR_DOMAIN/<PUBLIC_PATH>/bundle/mihomo.yaml?sources=airport-a,airport-b`
+  `https://YOUR_DOMAIN/<PUBLIC_PATH>/bundle/mihomo.yaml?sources=airport-a,airport-b,airport-c`
 - Stash bundle：
-  `https://YOUR_DOMAIN/<PUBLIC_PATH>/bundle/stash.yaml?sources=airport-a,airport-b`
+  `https://YOUR_DOMAIN/<PUBLIC_PATH>/bundle/stash.yaml?sources=airport-a,airport-b,airport-c`
 
 ---
 
@@ -111,8 +111,8 @@ HEAD /<PUBLIC_PATH>/providers/{name}.yaml
 ### 2. merged provider
 
 ```text
-GET /<PUBLIC_PATH>/providers/merged.yaml?sources=airport-a,airport-b
-HEAD /<PUBLIC_PATH>/providers/merged.yaml?sources=airport-a,airport-b
+GET /<PUBLIC_PATH>/providers/merged.yaml?sources=airport-a,airport-b,airport-c
+HEAD /<PUBLIC_PATH>/providers/merged.yaml?sources=airport-a,airport-b,airport-c
 ```
 
 把多个 provider 合并成一个 `proxies:` 文件返回。响应头只取 `sources` 参数里**第一个源**的配额信息。
@@ -120,10 +120,10 @@ HEAD /<PUBLIC_PATH>/providers/merged.yaml?sources=airport-a,airport-b
 ### 3. 薄壳客户端配置
 
 ```text
-GET /<PUBLIC_PATH>/clients/mihomo.yaml?sources=airport-a,airport-b
-GET /<PUBLIC_PATH>/clients/stash.yaml?sources=airport-a,airport-b
-HEAD /<PUBLIC_PATH>/clients/mihomo.yaml?sources=airport-a,airport-b
-HEAD /<PUBLIC_PATH>/clients/stash.yaml?sources=airport-a,airport-b
+GET /<PUBLIC_PATH>/clients/mihomo.yaml?sources=airport-a,airport-b,airport-c
+GET /<PUBLIC_PATH>/clients/stash.yaml?sources=airport-a,airport-b,airport-c
+HEAD /<PUBLIC_PATH>/clients/mihomo.yaml?sources=airport-a,airport-b,airport-c
+HEAD /<PUBLIC_PATH>/clients/stash.yaml?sources=airport-a,airport-b,airport-c
 ```
 
 特点：
@@ -136,10 +136,10 @@ HEAD /<PUBLIC_PATH>/clients/stash.yaml?sources=airport-a,airport-b
 ### 4. bundle 单文件配置
 
 ```text
-GET /<PUBLIC_PATH>/bundle/mihomo.yaml?sources=airport-a,airport-b
-GET /<PUBLIC_PATH>/bundle/stash.yaml?sources=airport-a,airport-b
-HEAD /<PUBLIC_PATH>/bundle/mihomo.yaml?sources=airport-a,airport-b
-HEAD /<PUBLIC_PATH>/bundle/stash.yaml?sources=airport-a,airport-b
+GET /<PUBLIC_PATH>/bundle/mihomo.yaml?sources=airport-a,airport-b,airport-c
+GET /<PUBLIC_PATH>/bundle/stash.yaml?sources=airport-a,airport-b,airport-c
+HEAD /<PUBLIC_PATH>/bundle/mihomo.yaml?sources=airport-a,airport-b,airport-c
+HEAD /<PUBLIC_PATH>/bundle/stash.yaml?sources=airport-a,airport-b,airport-c
 ```
 
 特点：
diff --git a/config/sources.yaml b/config/sources.yaml
index 0de40ab..b26a5f6 100644
--- a/config/sources.yaml
+++ b/config/sources.yaml
@@ -21,6 +21,15 @@ sources:
     include_regex: ""
     exclude_regex: "流量|重置|到期|续费|官网|离线|套餐"
 
+  airport-c:
+    enabled: true
+    display_name: C
+    kind: auto
+    url: ${AIRPORT_C_URL}
+    prefix: "[C] "
+    include_regex: ""
+    exclude_regex: "流量|重置|到期|续费|官网|离线|套餐"
+
 regions:
   hk:
     name: "🇭🇰 香港节点"