C 1-C4 is compulsory for both mathematics and advanced mathematics, and the content is probably a part of domestic high schools, such as functions, solving equations, circles, trigonometric functions and so on.
Then there are some optional contents.
Mechanics 1.2.3.4, similar to physics, such as force analysis, pulley, lever, speed, momentum and so on.
Statistcs 1.2.3, statistics, probability, permutation and combination, etc.
Decision 1.2.3, decision mathematics, such as the shortest path.
More purely, this is advanced mathematics, and its contents are mainly reasoning, proof, matrix and so on.
Looking at the choice of different schools, the overall content is probably part of the content of domestic high schools and universities. It will be very simple at first, because at first it will mainly be Grade One in China, and the difficulty will gradually deepen.