On Tao Te Ching by Gigi Lai Sr: "The disaster is greater than dissatisfaction, and the blame is greater than desire. Therefore, the content is always enough "(Chapter 46)," Knowing enough is not humiliating, knowing that it is not dangerous can last long "(Chapter 44). The phrase "contented people are always happy" has been circulating in China for a long time. It gradually evolved into a philosophy of life. China Taoism advocates: purity and inaction, leisure and relaxation. To some extent, contentment also confirms this view. During the Eastern Han Dynasty, Zhang Daoling initiated Taoism, based on which he preached everywhere. Therefore, "contented people always have fun" is widely circulated.