Going to the countryside was a national policy at that time, which existed before Mao Zedong launched the "Cultural Revolution". However, it has not been fully rolled out. After 1966, it was fully rolled out in the country. In any case, students who graduate from high school or junior high school must go to the countryside to exercise, study and receive re-education from poor and middle peasants. Put an end to taking the road of white specialization and becoming popular. So in the beginning, millions of students went to farms, farms and rural areas every year. As that generation, we should say that we are young and have no regrets about going to the countryside. At the same time, we can also say that we are helpless. Some people live well in this vast world, and some people live badly in this vast world. So we can use regretless youth and unhelpful youth here, because the historical conditions at that time were like this. I hope you can understand the history of the Cultural Revolution at that time. Some knowledge that will help you in your later life.