This is a couplet with the following allusions:
Su Dongpo (Su Shi) read some books when he was a teenager and was often praised by his teachers for his cleverness. Quite conceited, I posted a couplet at my door, "I know all the words in the world, and I have read all the books in the world." After a white-haired old woman visited Su Shi with an esoteric ancient book, Su Shi didn't know the words in the book. The old woman took this opportunity to criticize Su Shi gently, so Su Shi changed the couplet to "Learn all the words in the world and make up my mind to read all the books in the world" as a self-encouragement, and it has since become a much-told story.
Extended data
Su Dongpo (Su Shi):
East "slope" meat:
When Su Shi was demoted to Huangzhou, there was a famous jingle in Pork Fu: "Huangzhou is a good pork, but the price is worthless. The rich refuse to eat, and the poor don't know how to cook. Slow down the fire, less water, and it will look good when the fire is full. Get up and play a bowl every day, and you are too full to care. " Here, "slow fire, less water, good-looking after enough fire" is the famous Dongpo meat cooking method. Su Dongpo was later appointed governor of Hangzhou and was deeply loved by the people. And this "Dongpo Meat" followed closely, and became famous in Hangzhou, becoming a famous local dish.
2. Su Shi "checked out":
Su Shi lives in Changzhou. He spent his last savings and bought a house. He is preparing to move in another day. By chance, he heard an old woman crying very sadly. He asked the old woman why she was crying. The old woman said that she had a house that had been handed down for a hundred years and was sold by unfilial descendants. She cried very sadly. Looking carefully, it turns out that the house that Su Shi bought is the ancestral home that the old woman said. So Su Shi said to her, "I sold Yi's former residence, so there is no need to feel deeply distressed. Now it's time to return the house to Yi. " Su Shi immediately burned the deed and rented a house.