Zi said in Sichuan: "The deceased is like a husband, not giving up day and night." Zhuangzi said, "When things are alive, if they rush, they will remain the same, and when they do not move." Everything is constantly changing and developing. "In the natural world, it takes shape underground, and the changes can be seen." "A new day is called Shengde, and life is called relaxation." Adapt to the repeated changes of Tao, the stagnation of change, the six vacuities around it, the impermanence of ups and downs, and the combination of rigidity and softness, forming rapid changes. That is, "the sun is shining, the sun is abundant, the world is empty and the news is timely." "If you are poor, you will change, if you change it, you will have a long rule." It is really "change it to the world."