His good friend doesn't think so. He thinks that "those who are involved in shallow water still have fish and shrimp to eat, and those who are involved in deep water feed dragons." Because his good friend thinks that "there is no need to take risks to pursue small gains and big gains." In fact, it means "every gold coin has two sides." For example: roses. It can be said that every flower has thorns; In other words, there are flowers on every thorn.