Dear editor, I’m writing to tell you something about the problem of food safety. A couple of days ago, one of my classmates bought a bag of food from a supermarket. Some roommates were invited to enjoy the food. Unfortunately, after finishing it, all of them got poisoned and had stomachaches with their faces pale. They were quickly sent to a nearby hospital. A doctor examined them and gave them some medicine. They were out of danger soon after taking the medicine. This accident made me realize the seriousness of the food safety problem. I sincerely hope that the whole society pay much more attention to food safety. Yours, Li Hua