It can be used, and the method is as follows: After logging in to mobile QQ, click "News", and then click "Eat, Drink, and Play"; on the "Eat, Drink, and Play" page, click "Coupons"; after opening the coupon interface, click on "Popular Merchants"

"In the column, click to select KFC; after entering the "Business Details" page, you will see a lot of coupons and find what you need; go to a nearby physical store, open the coupon details page, and show the coupon

Show it to the staff to check and it can be used normally.