Take a look at whether it's 30% off, or full price, it seems that most of the ones I've used before are 30% off, which means that a 10 yuan cake coupon is 7 yuan, and you can use it to pay for it when you give it to the cashier.

Chai Diexuan full name Anhui Cai Diexuan Cake Co., Ltd. was founded in 1992, the company is headquartered in Hefei, Anhui Province, is a large food processing enterprises, mainly in the production, production and sales of various types of pastry, Chinese pastries and cakes as the core industry companies.