Keyword: WeChat API Introduction Message and General
Author: PondBay Studio[WeChat Developer EXPERT]
Address: http://www.cnblogs.com/txw1958/p/wechat-api-introduce.html

WeChat Official Account Admin Platform provides 2 API interfaces, Message and General.

With the Push Message API, incoming messages will be posted to your server via HTTP request to the URL you provide. Your server can reply to the message by sending a response as decribed in these documents.

With the General API, your app will be assigned a unique AppID and AppSecret, which can be used to perform actions like grabbing user data or sending rich-media messages.