China's ancient arithmetic was regarded as a minor detail by the ancients. Usually private schools teach a little abacus. There are always some people who choose to be Mr. Accountant in Qian Qian. Before they enter the modern accounting profession, in addition to a certain degree of abacus knowledge, some people with a heart will also study the previous works such as Nine Chapters of Arithmetic. ...

Mathematics is a branch of science, and science is a knowledge system that systematizes experience, produces a perfect system and can calculate a certain result.

To put it bluntly, ancient mathematics in China is not mathematics, but the experience accumulated by many generations.