Because it does not fit the ideology. the ruler should rule the country by using his heart, rather than using the law. The exist of will break the nature, or what we call “wu”. And also because of this ideology, it make the society in Song dynast more free and loosen than other dynast. Moreover, the ways that the king to govern the country will also affected by the ideology. For instance: in the number 17 from the Tao Te Ching said: “The best leaders are in harmony with their followers. The next best are those who are respected” which point out that the king should treat their subject humane, rather than using the cruel law to restrict their mind and