When reviewing history, we should remember the successful experience and learn the lessons of failure, so as to make better progress. May 8 refers to 1958. This year, China launched the Great Leap Forward Movement and put forward the slogan of "Great iron and steel smelting, Great Office, Great Agriculture". However, because the plan is too radical and the implementation method is improper, it has caused serious economic and social problems and brought huge losses to the development of China. The emergence of this idiom is to remind people that when reviewing history, we should not only see the successful experience, but also see the lessons of failure, so as to better sum up the experience, draw lessons and provide reference and enlightenment for future development.