A special express speeds on day and nightalong the trunk mail route between Beijing,the capital of China,and Nanning,the capitalof the Guangxi Zhuang Autonomous Region.Carrying not only thousands of passangersbut also tens of thousands of post matters,the train always brings joy or excitement tonumerous families.However,I dare say only a few of you,dear readers,know how hard postal workerswork in the mail wagons of these trains.After reading this news report,you may A special express speeds on day and night of the trunk mail route between Beijing, the capital of China, and Nanning, the capitalof the Guangxi Zhuang Autonomous Region. Carrying not only thousands of passangersbut also tens of thousands of post matters, the train always presents joy or excitement tonumerous families.However, I dare say only a few of you, dear readers, know how hard postal workerswork in the mail wagons of these trains. After this news report, you may