(1. This set of videos adheres to the spirit of selfless dedication of Shangxuetang and the spirit of sharing and cooperation of the mobile Internet, and shares the entire Android application system with everyone. 2. The coverage of this set of video knowledge points is the widest and most in-depth on the market, from entry to intermediate, to the end of any use explanation of a project. 3. This set of videos is very layered, and it was recorded by teacher Yaowei of Shangxuetang. Unlike other institutions that just launch videos out of context to whet the appetite of learners, this time they launched a complete set of Android videos, allowing readers to experience the Android teaching quality of Shangxuetang from a distance.)