How did the old fisherman analyze Confucius' poems?

The old fisherman took Confucius and his students to a cave. This cave faces the sea, which is where the old fishermen hide and fish. Confucius felt a little stuffy in the cave, so he went to the mouth of the cave and watched the sea view in the rain. When he looked at it, his poems were full of enthusiasm, and he couldn't help singing: the wind blew the sea ... a thousand waves, and the rain hit the beach ... ten thousand pits. The old fisherman listened to these two poems and said, "Sir, what you said is wrong!" " Confucius asked, "What's the matter?" The old fisherman said, "A thousand waves and ten thousand pits are not suitable. Is there only a thousand waves in the sea and no more or less beaches? Have you counted them, sir? " Confucius wanted to hear his opinion, so he quickly asked, "Brother, what do you think?" The old fisherman said, "It's better to change it to this:' The wind blows the waves and the rain hits the beach.' There are countless waves and pits that make sense. Right? "Confucius listened to, convinced.