Everyone knows that Zu Chongzhi (429–500 AD) was from Laiyuan County, Hebei Province, during the Northern and Southern Dynasties of China. He studied the value of pi and calculated that it lies between 3.1415926 and 3.1415927, accurate to seven decimal places, achieving the highest level in the world at that time. Today, I will tell two jokes about pi.
1) Once upon a time, in a small mountain village, there was a teacher, an old gentleman, who taught a class of children. The old gentleman was lazy by nature and addicted to drinking. Whenever he taught arithmetic, he would ask the students to memorize pi, and they had to recite 30 digits to pass. While the students were scratching their heads in confusion, the teacher would slip out of the classroom to a temple on a nearby mountain in the village to drink. One day, a clever student came up with a catchy rhyme and quickly memorized pi in his mind: "A temple on the mountaintop, a jug of wine, you are extremely miserable, drink the wine, wine kills you, if it doesn't kill, stroll you to death, fan and fan, fan ears and drink wine." ... It corresponds to 3.141592653589793238462643383279... exactly 30 digits.
2) At noon, during lunch, the restaurant where I was eating happened to be broadcasting the CCTV Channel 3 show, similar to the same song program. When Liu Huan appeared, the host asked him how many decimal places of pi he could recite. Liu Huan smiled and replied, "7 digits, I only remember that pi is between 3.1415927 and 3.1415928." He said it very confidently, and I was sweating at that moment.
