假如你叫李华，你美国笔友Tom在唐人街看到中国人有在春节贴对联习俗，对此很感兴趣。他想请你介绍一下中国春联传统和寓意。请你用英文给他回复邮件。注意：1.词数100左右,开头和结尾已给出,不计人总词数;2.能够适当增加细节,以使行文连贯;3.文中不能出现真实姓名和详细学校信息。参考词汇:对联（couplet）Dear Tom,   How is everything going?   I’m more than pleased to learn that you’re interested in Chinese couplets. As you know, the couplet is one of the Chinese traditional cultures with a long history. Like fireworks, it’s also one form of celebrating the new year. Actually, it’s a common practice for most Chinese people to put couplets on the ...