Pay attention to business development! Mencius, when talking about Qi Xuanwang's "Wang Zheng", praised Zhou Wenwang's practice of "closing the city to light without levying, and following the beam without help". He also said: "The past is also a barrier, which will be used to resist violence; It is impolite to go through customs today. "[19] the so-called counter-violence, that is, the establishment of customs officials is to prevent thieves and traitors; The so-called violence is to set tariffs, and he thinks that taxing businessmen is to tax violence. Mencius also said to Gongsun Chou: "If the city is rich but not expropriated, and the law is not rich, then all the businessmen in the world are happy and willing to hide in its city. "If you don't levy, you will be happy to travel around the world and wish to leave your way" [20]. It can be seen that Mencius strongly advocated that the government only send officials to supervise checkpoints and markets, and not levy taxes on the passage and trade of businessmen, so as to promote the development of commercial trade. In a word, Mencius talked positively about the benefits of doing business to get rich.