I am glad to receive your letter. And I am sorry to hear that you are putting on weight and often get colds these days. Now I will tell you what you want to know. In my opinion, you should pay more attention to what you eat. Remember to have food rich in fibers and low in sugar and fat, which can cause you to put on weight easily. Be sure to have more fruit and vegetables and to avoid cream and chocolate. The last and the most important thing is to take many kinds of exercise, which can keep you fit. I hope this will give you some help. Looking forward to hearing from you. Yours, Li Hua

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