Since human beings appeared on the earth, knowledge has sprouted in human wisdom, from ancient times to modern times with highly developed civilization, every social progress. All show the great role of knowledge. The progress of knowledge has promoted the development of history and human civilization. Knowledge is power! At present, there is a popular saying in the world that whether a country or a nation is prosperous or not depends on the cultural and knowledge level of its people. I think this statement is not unreasonable. Even if a country is not rich enough for the time being, as long as it has a wise people and a tradition of attaching importance to knowledge, it can be asserted that this country has a future. However, if a country or a nation is rich at present, but it supports a group of people who are "uneducated and unskilled", the result is bound to be sad. It is bound to gradually decline. The prosperous scene of "Kaiyuan Shi Sheng" was formed in the Tang Dynasty in history. In addition to the emperor's enlightenment, the main reason was the full development of science and technology in all walks of life at that time. The country is rich in talents and powerful. In ancient times, natural phenomena such as wind, rain, thunder and lightning were regarded as providence. Whenever there is drought, people kill pigs and sheep. Send them to the altar, kowtow to the gods, and listen to the Taoist call for the phoenix to beg for rain. Today, it seems too stupid and ridiculous, but it is the inevitable result of lack of knowledge. Now that we have scientific knowledge and methods of artificial rainfall, crops can still grow well even in drought. "God" can't get stuck around our necks. Man can conquer nature because he has knowledge. It can be seen that a country's prosperity is inseparable from knowledge.