Life lies in rest, which regulates the metabolism of the body. Rest is a method of keeping in good health in China since ancient times. Confucius said in the book "University": "If Zhi Zhi decides later, he can be quiet, he can decide, he can be safe, he can think and he can get it." In other words, meditation plays a very important role in learning to create and develop intelligence. Guo Moruo pointed out in the article "The Merit of Sit-in": "The Merit of Sit-in was valued by Confucianism during the Song and Ming Dynasties. Most critics think it comes from Zen, but I think it originated in Yan Hui. There is a saying in Zhuangzi that Yan Hui "forgets to sit", which may be the origin of China people's sit-in. " Yan Hui's meditation, forgetting its shape outside, transcending its heart inside and integrating with nature, shows the superb realm that meditation can achieve.