What are boundary teachers and yin-yang teachers?

Jumping is a flexible way of fighting, which is different from traditional hand-to-hand fighting and mechanical fighting. Although the protagonist is strengthened, it is by no means an invincible Xiao Qiang type. "Square perimeter", "solid foundation", "knot", "absolute" or "solution" are just four simple types, but they can all be used for attack or defense. They are just simple geometric figures, which, combined with the right time, the right place and the right people, can exert great power and are quite ornamental.

Yin and Yang teachers, also known as soothsayers or illusionists, originated in China. Not only do they know how to look at the stars and face each other, but they can also measure directions, know disasters, draw spells and perform illusions. People also realize that invisible forces, such as fate, soul and ghost, have the ability to dominate these things.