Courier refers to the personnel who collect, sort, seal, transport, deliver, input information, inquire, develop the market and deal with difficult express delivery at home, abroad, Hong Kong, Macao and Taiwan. In 20 15, courier, as a new occupation, was included in the newly revised edition of People's Republic of China (PRC) Occupational Classification Ceremony (20 15), which marked that its professional identity was established in the National Occupational Classification for the first time.