diff --git a/lib/index.d.ts b/lib/index.d.ts
index d8b8769..f3476bd 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -9,8 +9,8 @@ export interface TelegramChannelConfig {
     allowAllUsers?: boolean;
     maxMessageLength?: number;
     pollingTimeoutSec?: number;
-    /** 'rich' = Telegram native Rich Messages (needs a recent client);
-     *  anything else (default) = HTML compatibility mode that renders on all clients. */
+    /** 默认 'rich' = Telegram native Rich Messages（需较新客户端）；
+     *  显式 'html'/'compat' 等其它值 = 兼容模式，所有客户端可显示。 */
     rendering?: string;
 }
 export declare const Config: Schema<TelegramChannelConfig>;
diff --git a/lib/index.js b/lib/index.js
index cc2d308..80d798c 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -9,7 +9,7 @@ export const Config = Schema.object({
     allowAllUsers: Schema.boolean().default(false),
     maxMessageLength: Schema.number().default(4096),
     pollingTimeoutSec: Schema.number().default(30),
-    rendering: Schema.string().default('html'),
+    rendering: Schema.string().default('rich'),
 });
 function resolveAllowedUserIds(config) {
     if (config.allowedUserIds && config.allowedUserIds.length > 0) {
diff --git a/src/index.ts b/src/index.ts
index cb48213..89312e3 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -12,8 +12,8 @@ export interface TelegramChannelConfig {
   allowAllUsers?: boolean
   maxMessageLength?: number
   pollingTimeoutSec?: number
-  /** 'rich' = Telegram native Rich Messages (needs a recent client);
-   *  anything else (default) = HTML compatibility mode that renders on all clients. */
+  /** 默认 'rich' = Telegram native Rich Messages（需较新客户端）；
+   *  显式 'html'/'compat' 等其它值 = 兼容模式，所有客户端可显示。 */
   rendering?: string
 }
 
@@ -23,7 +23,7 @@ export const Config: Schema<TelegramChannelConfig> = Schema.object({
   allowAllUsers: Schema.boolean().default(false),
   maxMessageLength: Schema.number().default(4096),
   pollingTimeoutSec: Schema.number().default(30),
-  rendering: Schema.string().default('html'),
+  rendering: Schema.string().default('rich'),
 })
 
 function resolveAllowedUserIds(config: TelegramChannelConfig): number[] {