No, it's not as simple as I thought, or the focus may be different. I study American mathematics. They are required to master every knowledge point and be able to prove and use it. However, their progress will be much faster than that of China. For example, you are still studying three-dimensional geometry, and they start to learn calculus. Personally, I think that teaching in China will restrict people's use of mathematics, but there are many people in China, so this is the only way to select talents.