Confucius was a famous thinker and educator in ancient China. He is knowledgeable, but never complacent. When he was traveling around the world, on his way to the State of Jin, he met a seven-year-old child who blocked the way and asked him to answer two questions before giving way. One is: Why do geese bark loudly? Confucius said: Goose has a long neck, so it cries loudly. The child said: The frog's neck is very short, why is it loud? Confucius was speechless. He is ashamed to tell his students that I am not as good as him, and he can be my teacher!

Once, Yan went to Jingzhou and saw the paintings left by Zhang Sengyou, saying, "It's a hollow reputation." I am not very satisfied with Zhang Monk.

But the next day, it suddenly occurred to him: be modest and be serious. He went to see it again. After reading it, he was very profitable and said, "There are no pseudonyms under fame!" He sat and watched. Sit for a long time, lie down and watch in a different position. The more careful you study, the more enlightening you are, and the greater your gains will be.

So, the next day, I stayed under the painting, and then I studied and observed. After studying for ten days, I reluctantly left. His later painting achievements were greatly inspired by Zhang Monk Friends.

Once, when Xu Beihong was commenting on his works at an art exhibition, an old farmer from the countryside came up to him and said, "Sir, the duck you drew is not right. You drew a duck. How can the mother duck's tail be so long? " It turns out that Xu Beihong's "Writing Dongpo Chunjiang Plumbing Poetry" shows that the tail feathers of ducks are long and curly like rings. The old farmer told Xu Beihong that the drake had bright feathers and a curly tail. The mother duck's hair is hemp brown and her tail is very short. Xu Beihong accepted the criticism and expressed deep gratitude to the old farmer.