On the white base, the black lines flow casually and unrestrainedly, like an unintentional work after being naturally tipsy, with the unrestrained and uninhibited style of Huaisu's cursive calligraphy. The black and white textures alternate, with the smoked ash and black ink in the white, with the exquisite poetry of Wu Guanzhong's ink painting, worthy of the title of "Chinese national treasure".