What's the story of snail girl?

Sister-in-law in "Snail Girl" understands that a person must be kind, and one good deed deserves another.

Once upon a time, there was a lonely young farmer who made a living by farming for the landlord. He works at sunrise and returns at sunset every day, working hard. One day, he found a very big snail in the field. He was surprised and happy. He took it home, put it in a water tank and raised it carefully with water.

The story tells that Emperor Tiandi knew that Xie Duan had died since he was a child, and he was very lonely. He felt sorry for him. Seeing that he was thrifty, he sent a fairy snail girl to help him. Luohu, Shehong County, Sichuan Province has also been circulated, and the story is similar.

Extended data:

During the Jin Dynasty, there was an orphan named Xie Duan in Houguan County. His parents died when he was very young, and his kind neighbors adopted him. Xie Duan is honest, hardworking and thrifty. When he was seventeen or eighteen, he didn't want to give his neighbors any more trouble, so he built a small house on the hillside and lived independently. Because his family is poor, he has never married a wife. Neighbors are very concerned about him, and they have helped him hook up several times, but they have not succeeded.

One day, Xie Duan found a particularly large snail in the field and thought it was a strange thing. He took it home and kept it in a water tank for dozens of days. Xie Duan goes to work in the fields every morning, only to find that there is food, drink and hot water in the house when he comes home, as if someone had cooked it.

It's been like this for several days. Xie Duan asked his neighbor. Neighbors said they didn't do it themselves. After that, Xie Duan went out when the rooster crowed and quietly came back when the sun just came out. He peeked out of the fence and saw a young girl coming out of the water tank and making a fire under the stove.