丰子恺先生写过这样一段文字:有一回我画一个人牵两只羊,画了两根绳子。一位先生教我,绳子只需画一根,牵了一只羊,后面的都会跟来,我恍悟自己阅历太少。后来留心观察,果然发现,前头牵了一只羊走,后面数十只羊都会跟着去,哪怕是走向屠宰场。 Mr. Feng Zikai wrote a passage like this: Once I drew a man to pull two sheep and drew two ropes. A gentleman taught me that the rope only needs to draw one, and a sheep is brought in. All the people in the back will come and I realize that my experience is too little. After careful observation, I found that the first led a sheep go, followed by dozens of sheep will go, even if it is to the slaughterhouse.