The rise and fall of stocks is a sociological problem! I'm afraid the optical function doesn't work. 1 For example, is the stock rise of an enterprise related to its management level, management level and the trend of government policies, and to the trust of ordinary people? Just like Sanlu milk powder many years ago, good big enterprises closed down in an instant. This is a question that universities can't answer without administrators. Just carrying a book. You can study the case of Sanlu milk powder.