Compulsory 1 is probably a function divided into linear and quadratic functions, straight lines, inverse proportional functions, parabolas ... compulsory 2 is a set, including subsets, empty sets, intersections and unions. ....

There are also circles, circle equations, solid geometry and so on. Compulsory 3 is flow chart and statistics. Probability ... is very simple. Compulsory 4 is trigonometric function, plane vector and trigonometric identity. It's from Shenzhen, and the mainland is similar.