Li Zhonghe Lida Education Teacher: From the perspective of survival, we need food, clothing, housing and transportation, and the acquisition of food, clothing, housing and transportation requires survival skills. How to acquire survival skills requires learning and education. Humans, or the animal kingdom, need to learn to survive. And how to survive better requires the continuous improvement of education. What is the content of education? As a higher animal, human beings need to learn better survival skills on the basis of observing social rules, and the education respected by each era is different. Therefore, education is like investment. You let yourself or your children receive some education and learn some skills. In ancient times, there were natural selection and acquired selection. For a simple example, ten years ago, when people applied for majors, parents would let their children apply for computers and foreign languages, which was very popular. 10 years ago, they applied for law and literature in the university, but now many of them apply for architecture and normal education. They are giving their children or children to themselves, or investing in themselves. Everyone's choice is different, and the final result is different. This is like having a successful investment and a failed investment. It is often said that we should see the situation clearly, but few people can really understand it. Education is a science, so is investment. Education is an investment, which is an appropriate metaphor. They have the same characteristics, but they are also different.