Katherine Commale, an American girl, watched an African documentary when she was five years old. The film says that in Africa, a child dies of malaria every 30 seconds. Only five years old, she curled up on the sofa and began to count, one, two, three ... thirty. When she counted to 30, she looked scared and said, Mom, an African child died. We must do something!

Mother looked up the information on the Internet and told Catherine: "Malaria is terrible, and children with malaria are easy to die."

"Why did that child get malaria?"

"Malaria is spread by mosquitoes. There are too many mosquitoes in Africa."

"What shall we do?"

"Now there is a mosquito net soaked with insecticide, which can protect people from being bitten by mosquitoes."

"Then why don't they use mosquito nets?"

"Because this kind of mosquito net is too expensive for them to buy."

"No, we have to do something!"

A few days later, my mother got a call from the kindergarten teacher. The teacher said Catherine didn't pay for the snacks ... My mother asked her about the money? Catherine said, "Mom, if I don't eat snacks at school, I don't eat snacks at ordinary times, and I don't buy Barbie dolls anymore. Are these enough to buy a mosquito net?"

Mom took her to the supermarket and spent 10 yuan to buy a big mosquito net, which can be used by all four children. Then call a charity organization in Africa to see how to deliver mosquito nets. Coincidentally, I found her an organization called "Just Mosquito Nets" to deliver mosquito nets to African children. Catherine delivered the mosquito net herself. A week later, she received a thank-you letter from "As long as mosquito nets" association, which said that she was the youngest donor and told her that if she donated 10 mosquito nets, she would get a certificate.

Catherine asked her mother to stand with her at the flea market and sell her old books, toys and clothes to donate mosquito nets. But after selling for a day, business is not good. Catherine thought: I donate money to buy mosquito nets, and the' as long as mosquito nets' association will give me a certificate. Then others should get a license if they buy my things and give me money!