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Zu Chongzhi (429-500) was born in Wen Yuan. Jiankang (now Nanjing) was an outstanding mathematician and astronomer in the Southern and Northern Dynasties.
Zu Chongzhi studied natural science all his life, mainly contributing to mathematics, astronomical calendar and mechanical manufacturing. On the basis of exploring the accurate method of pi pioneered by Liu Hui, he first calculated the "pi" to the seventh place after the decimal point, that is, between 3. 14 15926 and 3. 14 15927. His "ancestral rate" has made great contributions to mathematical research. It was not until the 6th century A.D./KLOC-that the Arab mathematician Al Cassie broke this record.
The Daming Calendar written by him was the most scientific and progressive calendar at that time, which provided a correct method for future astronomical research. His main works are In the Frontier, Composition, Explaining Words, Li Yi and so on.
At the end of the Western Jin Dynasty, a large-scale war broke out in the north, and Zu Chongzhi's ancestors migrated from Hebei to the south of the Yangtze River to settle down. Zu Chongzhi was born in Jiangnan. His grandfather Zuchang was a great craftsman of Liu in Song Dynasty. He is an official in charge of civil engineering in the imperial court. His father, Zushuo, is knowledgeable and often invited to attend royal ceremonies and banquets.
Zu Chongzhi received a good family education from an early age. Grandpa told him "The Stars Move", his father led him to read the classics, his family's edification and his own diligence made him interested in natural science, literature, philosophy, especially astronomy, and he gained a reputation for erudition in his youth.