Su Dongpo asked Fo Yin monk, "What do you think of me?" Fo Yin only praised his friend's inquiry: "I think you are like a Buddha." Su Dongpo was very happy to hear this, but he turned the topic to Fo Yin and laughed at him and said, "Do you want to know what I look like in your eyes? Just like cow shit! " Say that finish, Su Dongpo also smiled, while Fo Yin just smiled without a word, and didn't seem to be angry. Su Dongpo thought that chess was the best chess, so he spread it around, and it reached the ears of Su Dongpo's sister. Su Xiaomei has always been very clever. When he heard this, he said to his brother, "You are a Zen master with this understanding! Buddhism pays attention to mood. Fo Yin looks at you like a Buddha, which means he has a Buddha in his heart. You look at him like shit, which means you have shit in your heart. " After hearing these words, Su Dongpo suddenly froze, understood why Fo Yin smiled without a word, and suddenly felt ashamed.