The first argument is that before liberation, there was a quip in the countryside that "a blessed person has two legs, and an unhappy person has two legs (no leg hair)", which means that the leg hair of a farmer's brother needs to go to the fields to do farm work, and it will gradually decrease, so if you have less leg hair, it means that you are a farmer and an unhappy person. People who are pampered will keep leg hair well.
The second argument is the invasion of western culture after the reform and opening up. There is a soft article flying all over the sky, saying that a man's body hair shows that his body is high in androgen. This pseudo-scientific statement leads to the statement that men have more body hair, higher androgen and stronger sexual desire. Although the amount of body hair has nothing to do with the level of androgen, rumors spread faster and more spiritually than science.
It may be a coincidence that someone had a brainwave and wrote a good man with one leg of hair, and later someone gradually changed to a good man with one leg of hair.
The above two statements, the first is a misunderstanding of rural people (note: doing farm work won't make leg hair less), and the second is a misleading statement (note: leg hair can't explain how much a man's androgen level is), so a good man with a leg hair or a good man with a hair is based on the wrong foundation. Don't take it seriously, just consider it an appreciation of historical folk culture.