Refers to the state of peace, selflessness and desirelessness in all things. From the ancient Chinese poem "Chaozhongcuo" of the Song Dynasty, the author is Su Shi. The poem says: Drinking water will not distract you from its source; fish swimming in pure water will be confused by itself. Being indifferent to the world makes your heart pure. The meaning of this poem is to savor life, not to pursue material luxury, but to feel the beauty of life with your heart. Only in this way can you find the wonderful things in nature and life everywhere, so that your soul can gain fresh and indifferent happiness.