south of fuli city of Xi' an aerospace base, outpatient department of general aerospace hospital, north square of Xi' an north railway station, etc. According to the Baidu map, Xi 'an unmanned vending machines are set up in the south of R&F City of Xi 'an Aerospace Base, the outpatient department of Aerospace General Hospital and the North Square of Xi 'an North Station. The unmanned vending machine only needs a voice reminder, and the cupboard door of the vending machine will automatically open, providing all kinds of snacks, fruits, lo mei and other commodities for the buyers. After the buyers choose them, they can pay online to complete the shopping.