[接收消息和事件](%E6%8E%A5%E6%94%B6%E6%B6%88%E6%81%AF%E5%92%8C%E4%BA%8B%E4%BB%B6.md) [发送消息](%E5%8F%91%E9%80%81%E6%B6%88%E6%81%AF.md)