Pen and ink should follow the times is a famous saying of Shi Tao in the early Qing Dynasty. The full text is that pen and ink should change with the times and the trend of poetry. Ancient paintings are simple and light, such as the sentences of Han, Wei and Six Dynasties. Medieval paintings, like sentences in the late Tang Dynasty, gradually became thinner. In the Yuan Dynasty, Ruan Ji Wang Cantong and Huang Ni recited Tao Qian's ci, and they repeatedly bathed in sadness and beauty, but it was difficult to recover after the dry water.

The general idea is that people paint and conform to the trend of the times, just like the poems of past dynasties. The poems of the Han, Wei and Six Dynasties are gorgeous and noble in color, magnificent and unpredictable, and the paintings of the ancients seem to be similar; In the late Tang Dynasty, the great powers had gone, especially after the Anshi Rebellion, the national power declined, and poetry also went downhill. At this time, the painting was subject to the general trend, and the momentum gradually weakened; In the Yuan Dynasty, such as Ruan Ji and RoyceWong, there was nothing they could do except maintain a pulse. Ni Zan, Huang and others are just repeating the wisdom of the ancients, but they can't see the grandeur of the ancients in the picture, just looking around in their own small circle. Moreover, because of her fatigue, a maid is holding up that she has nothing new in the works of a thousand-year-old painter. Others have boiled water for thousands of times. What can you do if you roll it ten times at a time?