This is a colorful world of ancient martial arts, and people in this world admire martial arts. People at the bottom who do not have the opportunity or qualifications will learn some ordinary martial arts. Some young masters from powerful families and highly qualified people will go to cultivation sects to practice magic. The former are admitted on bail by their families, and the latter are admitted as disciples by those cultivators.
There are exceptions to things, and there are exceptions to people. There is a small group of people who are born sick and cannot learn martial arts and magic. But this is also a world where the jungle prevails. If you don't have strength, you have to be bullied and trampled on by others.