1. There is no receipt for buying watches in foreign duty-free shops, only a receipt. You can get an invoice when you buy a watch in a domestic duty-free shop.
2. 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. At present, the duty-free shops in China mainly include port duty-free shops, traffic duty-free shops, local duty-free shops, diplomatic duty-free shops, ship replenishment duty-free shops and foreign exchange duty-free shops for Chinese people going abroad.