"Bodhi has no trees, the mirror is not a stage, and there is nothing. Where can it be dusty?" It is a poem written by Huineng, the sixth ancestor of Zen Buddhism. Through this poem, Huineng established his position in Zen, and Zen also established its final position in China. Zen was first introduced to China from Dharma. It entered as an unknown faction. At that time, the famous and dominant factions were Legalists and other factions. However, Zen has made great progress in China and eventually became the mainstream of Buddhism in China, which is related to the contribution of Huineng, the sixth ancestor of Zen. Huineng, the sixth ancestor, is an epoch-making figure in the history of Zen. Because in the era of Huineng, the sixth ancestor, there was an important debate within Zen Buddhism, that is, whether Buddhist practice was "self-cultivation" or "cultivation of mind". This argument is expressed in two poems by Shen Xiu and Hui Neng. The school represented by Shen Xiu believes that it is difficult to become a Buddha without personal efforts if one wants to cultivate one's morality and become a Buddha, that is, the idea summarized in the so-called "being a bodhi tree and having a heart like a mirror". In other words, to become a Buddha, you should practice, "always wipe, not make dust", and avoid being contaminated with the "miscellaneous dyes" in the world. This was the mainstream thought of Zen at that time. Huineng laughed at Shen Xiu's incompleteness. His view is that since Shen Xiu admits that "everything is empty", isn't your body "empty" too? Since your body is also "empty", what do you "always rub"? Therefore, Huineng thinks that Shen Xiu's view is wrong. Huineng advocates "cultivating the mind" to become a Buddha, that is, the thought of "Bodhi without trees, mirror without platform" summarized in the poem. Huineng said that only by solving the problem of mind can we become a Buddha. Because the body is "empty" and the "mind" is real, practice can only be to cultivate the mind. Huineng's son represents such a theoretical system.