The book Composition written by Zu Chongzhi, as a textbook of imperial academy in Tang Dynasty, was included in the famous Ten Books of Calculating Classics.

Zu Chongzhi made the true value of pi accurate to 3. 14 15926, which was the most advanced achievement in the world at that time. Together with his son Zuxuan, he successfully solved the problem of calculating the volume of the ball by using the "Mouhe Square Cover" and got the correct formula of the volume of the ball.

In 462, Zu Chongzhi also compiled the Ming Calendar, which used precession to reform the leap system. He opposed superstitious divination, deduced from the ancients, calculated related values more accurately by mathematical methods, and adhered to the scientific spirit of seeking truth from facts.