It cultivates, cultivates and enriches people's spiritual world in a certain sense. It can teach people to forget gains and losses and get rid of interests. Get rid of all kinds of vulgar and boring realistic care and life bondage, or be aloof and yearning, or be at ease, and integrate into the lively and flowing nature full of business, from which you can gain the strength and interest of life, thus soothing people's mental trauma and pain. That's why China's literati and intellectuals, after experiencing great failures and misfortunes, didn't really destroy them, but more saved their lives, insisted on moral integrity but lived in seclusion, enjoying the mountains and rivers together and leading a totally clean life.