peeling can avoid agricultural chemichals and bacteria.

yes,,chemicals...

Peel fruits is a habit , we are afraid of chemicals,this is not a culture. Maybe use chemicals is more popular in China.

Some of the old people, they don't know the peels are full of nutrition. They think them rubbish, so they peel the apples and fruits like that. For young people, they have the knowledge of nutrition, but they are afraid of the chemical pesticides, so ... yeah, they can go deep into the apple, but which contains the most of the pesticide is the peel.

因为大陆许多水果种植的时候会喷洒超量的农药，导致农药残留，不想慢性自杀就不要吃皮。