It doesn't usually bleed.
Don't water your ears for three days after a fight.
Don't eat peanuts and some spicy food.
Earrings can be changed at about the same time, usually half a month. Short time, on the one hand, it is not easy to wear, on the other hand, it will hurt.
It is best to wear it for a period of time every day, otherwise it will grow easily. Some people say that tremella nails can't grow for a while. This sentence is estimated to depend on people, because at least it is useless to me. When I was a child, my ears grew up and I played again.
You can wear humble earrings at school, and they won't grow up after a long time.