(Course directory: Lesson 1, Lesson 2 at the beginning, Lesson 3 of development overview, Lesson 4 of WeChat server interface verification, Lesson 5 of receiving ordinary message text message, Lesson 6 of acquiring message, Lesson 7 of parsing message, Lesson 8 of receiving ordinary message structure function, Lesson 9 of receiving ordinary message picture message, Lesson 10 of receiving ordinary message voice message, Lesson 11 of receiving ordinary message video message, Lesson 12 of receiving ordinary message small video message Receive ordinary message Geography message Lesson 13, receive ordinary message link message Lesson 14, passively reply user message text message Lesson 15, passively reply user message picture message Lesson 16, passively reply user message voice message Lesson 17, passively reply user message video message Lesson 18, passively reply user message music message Lesson 19, passively reply user message graphic message Lesson 20, development tool Lesson 21 Lesson 22 of Case 1, Lesson 23 of Case 2, Lesson 24 of Case 3, Lesson 25 of Case 4, Lesson 26 of Mass Sending, Lesson 27 of Automatic Reply, Lesson 28 of User defined Menu, Lesson 29 of Voting Management, Lesson 30 of Other Functions, and Introduction to Subsequent Courses)