叮咚……213,于小曼,信件!“”哦,来了!“于小曼高声喊道,赶忙放下刚吃了两口的冰激凌,快速向门口跑去。签收完送走了邮递员,于小曼坐回到电视机前,却没了吃东西的心情,她反复看着手中的蓝色信封,不禁纳闷起来。于小曼经常能收到信件,大部分是来自全国各地的笔友,所以她对各式各样的信封格外熟悉。然而眼前这个,却是一封需要交纳额外费用才予以投递的匿名信,信封上除了收信人的姓名、邮编、地址外,什么都没有。” Ding Dong ... ... 213, in Xiaoman, letters! “” Oh, here! “Xiaoman shouted aloud, quickly put down just eat two ice cream, quickly ran to the door. The postman, Xiaoman sit back in front of the TV, but no mood to eat, she repeatedly looked at the blue envelope, can not help but wonder. In Xiaoman often receive letters, mostly from all over the country So she is especially familiar with all kinds of envelopes, but this one is an anonymous letter which is delivered at an extra cost. There is nothing in the envelope except the recipient’s name, zip code and address. ”