Why can't tattoos be tattooed casually, such as tattoo Guan Gong or something?

Taoism says that anything with a shape or use has a corresponding spirituality.

Just because of short time or other aspects, lack of spirituality.

For example, scissors for daily use, if the scissors were handed down from your father or grandfather.

Because I often kill people and cut things short for a long time. Have spirituality.

This kind of scissors can be used to ward off evil spirits.

For example, killing a pig knife is often a suffocating thing.

And tattoos, too Maybe the aura is a little weak, but it still has an impact.

As for Guan Gong, he is a soldier!

If your loyalty is not enough, really don't tattoo it.

Believe in evil.