“I found a lot of bacteria on the surface of your body,” Maple Leaf Love puts away the magnifying glass and sighs.

“Isn’t it normal?” Li Yong is aware of bacteria. There are a lot of bacteria in the air. So is on the surface of human beings’ bodies. It is said that there are hundreds of millions of bacteria in a piece of nail.

Some bacteria are beneficial, doing human beings’ bodies no harm. Some bacteria are harmful. Because of these harmful ...