1. Confucius in the Spring and Autumn Period was a great thinker, politician, educator and founder of Confucianism in China. People revere him as a saint. However, Confucius believed that no one, including himself, was born knowledgeable.

On one occasion, Confucius went to the Luwang Ancestral Temple to attend the ancestor worship ceremony. He asks people about almost everything from time to time. Someone laughed at him behind his back, saying that he was rude and asked everything. After hearing these comments, Confucius said, "Ask if you don't understand, that's exactly what I want to know."

2. Jia Sixie was an outstanding agronomist in the Southern and Northern Dynasties, and he was famous for Qi Yao Min Shu. However, such a learned scientist also asked the farmer who was considered by some people as the lowest status at that time for advice. Some people sarcastically said, "Why did the famous Jia Sixie ask the shepherd for advice? Is it disgraceful? " ? "But Jia Sixie didn't care, and insisted on worshipping omnipotent teachers like primary school students.