Try to learn science well. . . . "Astronomy is a science that human beings use the latest knowledge of physics, chemistry and mathematics and the most advanced scientific and technological means to conduct professional research on astronomical phenomena like black holes such as stars, planets and galaxies in the universe. It is not only a basic subject, but also a comprehensive system that integrates human wisdom. The seven basic disciplines are mathematics, logic, astronomy and astrophysics, earth science and space science, physics, chemistry and life science. )-From Baidu Encyclopedia.

So LZ still has to work hard.