He need know some simple chinese before he come to china.so that he can do something by himself.he should know the culture of china.he should't hurt others.he shouldn't say bad words in the face of ot...能不能说些有用的啊还he should't hurt others. he shouldn't say bad words in the face of others.拜托，不是教小朋友啊，这个你到哪里都要的啊He shouldn't break chinese laws. He shouldn't drive his car after drinking much wine大哥，我们可以假设他是一个遵纪守法的好市民。（假定他是美国人）我要问的是文化上的一些差异，还有一些文化上的禁忌，比如说:不能直呼老人姓名He shouldn't ask girls age. he shouldn't ask other's salary. he shouldn't let girls know that how fat they are.