Mathematics in China is called arithmetic, and it is called mathematics abroad. It is difficult for us to solve math problems, but it is difficult to think abroad. Our teacher basically lets students explore the methods of solving mathematical problems, while overseas students guide you to understand and master mathematical ideas. This is the reason why China University can't catch up with foreign countries in mathematics. For example, if you want to learn abacus mental arithmetic abroad, you must understand its principle and explore what new counting methods and applications are available according to the principle. As for how fast and how big the calculation can be, let the machine do it. China has to train to calculate many results to see who has a fast calculation speed and large calculation data. What foreign countries teach is essence, while what China teaches is appearance. Who do you think is difficult? It would be extremely glorious if foreign bullfrogs invented biological calculators or new calculation methods according to the abacus mental arithmetic principle. If the student only remembers more data through training, everyone will sneer at him. So don't say that China's mathematics is much better than foreign countries. We're just proud to hang a few more hard drives. Everyone is working on CPU. There is a big gap.