Literati painting emphasizes "pen and ink interest". What is fun? That is, the subjective feelings and inner cultivation of literati. The interest of pen and ink is the embodiment of the author's subjective feeling and inner cultivation through pen and ink on drawing paper. China people's mind is lofty, their vision is broad, their rhythm is slow, they satisfy their own spiritual adjustment, and they try to grasp the wonderful charm in the dark. Under the influence of the thinking mode of "harmony between man and nature", Chinese painting takes "harmony between man and nature" as the highest theme and takes harmony between man and nature as the performance feature. Therefore, the highest value of painting lies not in the description of objects or the expression of subjective spirit, but in grasping the realm of heaven and earth through painting, thus achieving an ideal life.

"Pen and ink interest" is also the embodiment of the universal spirit through painting.