How do airport cloud merchants buy Maotai?

After arriving at Guiyang Airport, foreign tourists can scan the Maotai reservation and liquor sales system at the arrival of the airport with the ticket information. The QR code information can only be scanned when the airport arrives, and it will be invalid after receiving WeChat. After filling in the information, the winning user will receive a short message the next day to buy wine at the designated place. This is an activity, and the wine bought is real wine.