Inspired by the natural scenery of bamboo, the bamboo in the eyes is transformed into the bamboo in the chest, and then with the help of pen and ink, it is transformed into the bamboo in the hand, that is, the bamboo in the painting. Bamboo in nature exists objectively. Bamboo in the eyes of painters is different from bamboo in nature, and then it needs to be processed and subjectively treated to form a bamboo in mind. This is what the painter said. When it falls on paper, it will become a bamboo in his hand. "Bamboo in the hand" refers to a kind of "second nature" created by the painter. Whether it is bamboo in the chest or bamboo in the hand, it is the sublimation of bamboo in his eyes. In a word, it is what the painter sees.