Zhong Kui is tattooed on his back because his forehead is protected by three kinds of true fire, and only his back is unguarded, so Zhong Kui tattooed on his back to protect himself.
Tattooing Zhong Kui on your body will attract a lot of attention. For example, you can't step on your back, that is, you can't do massage and you can't step on your back. Even if you are beaten in the future, you can't gasp.
Besides, life in Zhong Kui is too hard for ordinary people to bear. So if you want to tattoo Zhong Kui, you'd better find someone to tell your fortune and see if your horoscope can bear it, so as not to be beaten. Someone once tattooed Zhong Kui on his back, and it was the last straw. He was accidentally injured by a gun in less than three days and kept it for more than a year. Well, I had an accident while driving, and now I'm paralyzed ... So, it's better not to tattoo Zhong Kui.