Zu Chongzhi's ancestry was from modern Baoding, Hebei. To flee from the ravage of war, his grandfather Zu Chang moved to the Yangtze.
Zu was born in Jiankang in 429 A.D. Both his grandfather and his father all worked in the government of science and engineering. As a result, he started learning astronomy and mathematics from a very young age. He didn’t have any other hobbies, he only interested in his studies of science. He passed away in 500 A.D.
He lived in Song dynasty. Because of his talent and wisdom, he have been given lots of very important jobs. However, in ancient china, emperors loved wars and they always want their territories to become bigger and bigger. So, the society at that time was