Dear Xiao Wang, I have received and read your letter, in which you mentioned that you wanted to lose weight by dieting. It is only natural that young girls at your age hope to look beautiful. However, in my opinion, health is more important than beauty. For a student, studying is the first thing to consider while appearance is the second. So do not let others' opinions affect your normal life. However, if you do want to lose weight, it is a good idea to do it by getting more exercise and changing unhealthy eating habits. The most important thing is that you keep a healthy state of mind, as it will help with your studies, and will also help you overcome difficulties in dieting. I hope my advice will be helpful to you and I'm looking forward to your next letter. Yours, Li Hua