It was originally the 14 of the 25 Tong Yuan methods in the Shurangama Sutra of Buddhism. Su Dongpo and Zhu Huian both adopted this sentence, but their statements are not exactly the same as those in the Shurangama Sutra. Zhu means: whenever and wherever you do this job, you should always feel at ease and comfortable, and don't make your whole body sad; Be calm, let nature take its course, and don't be stubborn. When the air is calm to the extreme, it naturally moves, just like a fish in spring, floating on the water and hissing; When Qi moves to the extreme, it naturally needs to be quiet, just like insects trapped in the soil in winter ("trapped" means gathering and gathering). At this time, the qi in the body interacts with the image of heaven and earth; Static and dynamic, there is an opportunity for Gankun to unite with Jun, which is beautiful. If you ask who is in charge there? In fact, there is no domination, but the role of nature.