According to the information about duty-free shops in Shanghai Airport, the business hours of duty-free shops in Shanghai Airport are: departure shops are open continuously from 06: 30 to 23: 30, and entry shops are open 24 hours a day. Duty-free shops refer to shops that have been approved by the General Administration of Customs, set up sales places and supervised warehouses for storing duty-free goods in places approved by People's Republic of China (PRC) and the State Council or their authorized departments, and sell and supply duty-free goods to specific targets. Duty-free shops in China mainly include port duty-free shops, traffic duty-free shops, local duty-free shops, diplomatic duty-free shops, ship supplies duty-free shops and foreign exchange duty-free shops for Chinese people going abroad.