1, pi: the Zu Chongzhi is accurate to the seventh decimal place, that is, between 3. 14 15926 and 3. 14 15927. This achievement was nearly a thousand years ahead of the world, and it was not broken by Arabian mathematician Cassie until15th century. Zu Chongzhi also gave two fractional forms of pi: 22/7 (approximate rate) and 355/ 1 13 (secret rate), in which the secret rate is accurate to the seventh decimal place. This record was not rediscovered by Dutch mathematician Otto until the 6th century AD/KLOC-0.

2. Composition: Composition, a famous mathematical book co-authored by Zu Chongzhi and his son, was designated as the main teaching material of arithmetic by the court in the Tang Dynasty, and most of the mathematics exams in the Tang Dynasty were based on it. Later, it spread to Japan and Korea and was also used as a school textbook.

3. The volume of the ball: Zu Chongzhi and his son Zuxuan successfully solved the problem of calculating the volume of the ball by using the "Muhe Square Cover" and got the correct formula of the volume of the ball.