Did Nanjing Post do a good job in part-time day?

The part-time job of Nanjing Post is to unload cars constantly and work like a machine until dawn, one day 12 hours, which is long and tiring.

Postal service is a business run by the state or directly engaged in delivering all kinds of mail (letters or articles), which has the characteristics of communicating politics, trade and people. Postal service is a kind of productive force. For example, a "one-letter meeting" is a meeting in which information is transmitted, opinions are exchanged, topics are focused, and affairs are handled by means of national postal service in the form of circular letters.