In the world of classical literature in China, Liu Zongyuan, a great essayist in the Tang Dynasty, highly praised the character of cattle. In the painting history of the motherland, there is a picture of five cows written by Han Kun in the Tang Dynasty, which is regarded as one of the top ten treasures handed down from generation to generation. There is a famous sentence in the poem of Lu Xun, a master of modern literature in China: "Look at a thousand fingers coldly, bow your head and be a willing ox"; Among the poems of Cang Kejia, a famous contemporary poet, is his "Old Cow": "A piece of water and mud is not cultivated, but things are intensively cultivated. The old cow can also solve the problem of glory, and I can't wait to whip myself. " Mao Zedong's "Essays on Heroes" said that "all workers, revolutionaries and revolutionary literary and art workers should follow Lu Xun's example and be the' cows' of the proletariat and the masses, and do their best until they die." Classic quotes.