Even the moon has a crater called Mount Zu Chongzhi. His greatest contribution was to make Pi accurate to seven decimal places, which was the most advanced achievement in the world at that time. It was not until 1000 years later that some people in Europe made pi accurate to this extent, so people called it "ancestral rate" in ancient times.
Zu Chongzhi's achievements are mainly in mathematics, astronomical calendar and mechanical manufacturing. Zu Chongzhi also wrote the seal script, which was included in the Ten Calculations Classic and used as a textbook in the Tang Dynasty.
In astronomical calendar, Zu Chongzhi mainly compiled Daming Calendar and wrote many comments on its implementation.
Zu Chongzhi's application for the use of Daming has impacted the traditional world, the sun, the moon and the calendar, leading to the one-sided questioning of courtiers. The conservative forces suppressed Zu Chongzhi under the signboard of the ancient sages, believing that "the sun is always in a certain position during the winter solstice, which is determined by the ancient sages and will never be changed", and accusing "Zu Chongzhi that the winter solstice moves slightly every year, which slanders the sky, violates the saints' classics and is a kind of rude disobedience".
Zu Chongzhi in machinery manufacturing, Zu Chongzhi produced a lot of mechanical equipment, including compasses, water hammer mills, thousands of miles of ships, timers and so on.
abstract
Zu Chongzhi's calculation of pi is based on previous studies, which can be said to be a difficult problem in mathematics. Many people have calculated pi since ancient times. Zu Chongzhi made Pi accurate to seven decimal places for the first time in human history. In that era of brush and calculation, the difficulty can be imagined.