书面表达。
假设你是李平，你的笔友John要来中国度假，请写一封电子邮件告诉他中国的礼节。包括以下几个方面：
(1) Greeting
(2)Eating meals with other people
参考词汇: be supposed to say, shake hands, use chopsticks, pick up, don't talk too much
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