What does snail girl mean?

The snail girl is an ancient legend in China. It was once told as a classic fairy tale. It is said that a hardworking and kind fisherman caught a snail and took it home to raise it carefully. He still works every day, but he doesn't know who cooks every day when he comes back. Finally, one day, he found that the snail he had called back had turned into a beautiful girl cooking for him. This fairy tale tells us that hardworking and kind people will eventually get a happy ending!