It doesn't mean that counting one is necessarily more difficult than counting two. The breadth of the first mathematics test is large, and the depth of the second mathematics test is large.
Mathematics 1 focuses on linear algebra, advanced mathematics, probability theory and mathematical statistics, which is comprehensive and difficult, with linear algebra accounting for 22%, probability theory and mathematical statistics accounting for 22% and advanced mathematics accounting for 56% at most. In the 123 middle school, the scope of investigation is the widest, and basically the whole textbook has to be tested.
The focus of Math 2 is that there are only linear algebra and advanced mathematics in the exam, of which linear algebra accounts for 22%, and the range of linear algebra in Math 123 is roughly the same, while the number 2 in advanced mathematics has been deleted a lot, such as vector algebra and spatial analytic geometry, triple integral, curve integral, surface integral and infinite series, so there is no need to review this aspect.