Dear John,
    I was excited to hear that you would come to China next month. Now let me tell you something different you may meet here. To begin with, the weather here is totally different from that in your place. It hardly ever rains but whenever it does, it rains heavily. So you'd better bring a raincoat and overcoat.
    Another big difference is food. The Chinese food is quite different from yours. You have to try to get used to it, and learn how to use chopsticks. I'm sure you can do it.
    Finally please bring me a big American map if possible. Thank you very much.
    I am looking forward to meeting you.
    Yours
    Zhang Nan 
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