A pot of wine (3. 14 159) in a temple on the top of the mountain, two pleasures and bitter evils (26535), drinking wine (897), wine killing two (932), killing two (384), walking to death two (6264) and scratching (338). To save the third wife (937), I cheated on my father (5 1058) and my uncle (209), which was actually pulling my uncle's ear and cheating on his wife (74944592307); Don't slip (8 16), commander slip (406).

The development process of pi

Pi was not invented by one person, but was calculated by different mathematicians through countless times in the course of history. Archimedes (287–2 BC12), a great mathematician in ancient Greece, initiated the theoretical calculation of the approximate value of pi in human history.

Around 480 A.D., Zu Chongzhi, a mathematician in the Northern and Southern Dynasties, further got the result accurate to seven decimal places, gave the insufficient approximation of 3. 14 15926 and the excessive approximation of 3. 14 15927, and also got two approximate fractional values.