Characteristics of celestial art
At that time, it was mainly used to improve the solving skills of equations, and it was also recorded in some books that quadratic equations were established by this method. Later, it was used to explore some characteristics of inscribed circle of right triangle, which played a key role in later mathematical research.
Astrology is a general method of using unknown equations, which is basically consistent with the method of equations in modern algebra. In ancient mathematics, equation and solution are two important interrelated problems. Astrology is a general method of using unknown equations, which is basically the same as the method of equations in modern algebra, but the writing is different.