1, courses with different difficulties. Schell's special training camp for good topics includes video explanation, topic explanation and exercises, covering all aspects of mathematical competitions, including number theory, algebra, geometry and combination. Students can choose courses with different difficulties according to their own level.

2. Members. The special training course of Schell's good questions was developed by the mathematics competition team of Schell Note Club, and the team members came from top universities such as Harvard University and Massachusetts Institute of Technology.