In the period of King li of Zhou Dynasty, there was a trusted official named Rongyi Gong. In order to satisfy the material desire of King li of Zhou Dynasty, Rongyi Gong came up with the idea of collecting "patent" tax. Whether it's collecting herbs, cutting firewood, fishing, catching shrimps, hunting birds and animals, the common people have to pay taxes. They even have to pay for drinking water and walking. King li of Zhou collected the "patent", and Rui Liangfu, another minister, once strongly admonished: "profit comes from all things contained in heaven and earth. The benefits of all things in heaven and earth are due to all people in heaven and earth. How can one person have them exclusively? Patents will infuriate people and cause great trouble. To be a king, we should spread our interests to all the people in the world. The patent of a man is still called theft. If the king does it, it will be fresh. " Unfortunately, King li of Zhou didn't listen to Rui Liangfu's warning, which eventually led to the riots and the loss of the whole country.
