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What has Zu Chongzhi achieved?
Zu Chongzhi (429-500) was a scientist in the Southern Dynasties. In the Southern Song Dynasty, he presided over Hualin Province, and later served as a guest in South Xuzhou (now Zhenjiang). Nanqi, the official to Changshui is a captain. He calculated the value of pi between 3. 14 15926 and 3. 14 15927, and put forward its ratio of 355/ 1 13, which is about a thousand years ahead of the world. The data of the sun-moon cycle in the Daming Calendar compiled by him is more accurate than other calendars. Write "refutation", stick to the truth and oppose "falsely pushing the ancients". He also transformed the south guide car and made a water hammer mill and a thousand-mile boat. , are very smart. His son Zuxuan is also a mathematician. Together with him, he worked out the exact formula of sphere volume and put forward the principle of land rent. Mathematical works such as "Zhang Fa" and "Nine Chapters" have been lost.