Legend has it that a long time ago, there lived a fishmonger selling fish in Paifang Hutong. The fishmonger set up a fish stall under the stone archway. There were many people coming and going in the aisles, and they all bought some fish from the fishmonger to eat at home. For a time, the fishmonger's business was quite prosperous. But after a long time, the fishmonger began to use his crooked brain. When selling fish, the fishmonger pressed the beam head with his little finger, which was clearly fourteen taels (in ancient times, sixteen taels was a catty). He gently pressed it down with his little finger, and then moved the weight to a catty of stars. When the buyer saw that the scale was a little higher, he couldn't settle the stars, so he bought the fish home happily.

The fishmonger thought he was clever, but after a long time, he was discovered by a shrewd man. People began to talk about it in succession, but instead of repenting, the fishmonger thought that he was better than others, ignored others' attention to him, and turned a deaf ear to his deceptive business.

One day, a fishmonger was selling fish under the archway, and an old lady came to him with a bag of fish in her hand: "Fish seller, I just bought a catty of fish from you, and when I went to that shop, it was two taels. Is there something wrong with your scale?"

When the fishmonger found you, he knew it was not good, and he saw that several people who had paid for the fish had put the money back in their pockets. Seeing this, the fishmonger looked up and pointed to the stone archway and swore, "My fishmonger has been selling fish for so many years. If he is short of weight once, let the corner of this archway fall and kill me!"

As soon as the voice just fell, people were startled when they heard a "click". When they came to their senses, the corner of the stone archway with which the fishmonger used his finger just now really fell, and the fishmonger was killed by a big stone corner.

This legend has been circulated until now, and the big stone horn that fell from the top of the stone archway and killed the fishmonger is still lying under the archway.

"There are gods on the head of three feet", no matter what people do, they are doing it for themselves. This is the natural principle that one good turn deserves another, and one evil turn deserves another. I hope people can get some inspiration from this folklore.