Haveyoueverdreamedaboutsendingalettertoyourselforyourfr...
问题详情：Haveyoueverdreamedaboutsendingalettertoyourselforyourfriendsinthefuture?Whileexpressmail(快递)isafastwaytosendyourletters,thereisanothertypeofmailappearinginChinaasanewbusiness—futuremail.“T...