A piece of paper from home is just a wall, so why not let him have three feet? The Great Wall is still there today, but Qin Shihuang is nowhere to be seen.

There were two families in the Qing Dynasty. One was surnamed Li. They started a business because their uncle was the local magistrate (equivalent to the current mayor). The business was good and their family fortune was huge. The other was surnamed Wang. Their ancestors had been wealthy for generations. My uncle is Zhang Ying, the prime minister of the dynasty, enjoying the happiness of family relationships in the world. The two families are neighbors. Once, the Li and Wang families had an argument over a wall. They both wanted to build an extra three-foot wall in someone else's yard, but no one gave in. As a result, the two families had no peace in recent years. The Wang family flew to the capital to ask their uncle, the current Prime Minister Zhang Ying, to say hello and "settle" the Li family. After Prime Minister Zhang Ying received the letter from his nephew and read it, he walked back and forth in the room several times and then sent a letter back to his nephew at home as soon as possible. The content of the letter is a poem: "It's only a wall to carry a book thousands of miles away, so why not let it be three feet high. The Great Wall is still there today, but Qin Shihuang is nowhere to be seen." When the family read the book, they suddenly understood the meaning of the letter and realized the mystery. He took the initiative to give in three feet on the dispute line and built a wall. The neighbor Li was also deeply moved, and she set aside three feet of land to build a house and a courtyard. As a result, "Six Feet Alley" was formed, and the story of the Li and Wang families has been passed down to this day.