Grandfather is a grandfather, simplified as an ancestor; To be a pioneer is to rush ahead and simplify to rush.

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.

Extended data

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.

Zu Chongzhi once said in his works that he began to "specialize in mathematics and search for the past and the present" from a very young age. He collected almost all documents, records and materials from ancient times to the present.

At the same time, it is advocated that we should never "falsely push the ancients", never tie ourselves to the outdated wrong conclusions of the ancients, and make accurate measurements and careful calculations in person. As he himself said, he often "looks at the ruler, looks at the instrument and tries his best to make plans."