Douyin flash sales cannot be used together with coupons.

The rules for the use of Douyin coupons stipulate the types and definitions of coupons:

Coupons: Coupons are made by the platform/merchants/experts and issued to users who meet the conditions for receiving coupons. They are marketing promotion tools used to offset the price of goods when placing orders; There are 3 types of coupons: platform coupons/anchor coupons/merchant coupons; Platform coupons: Coupons set by the platform can be used to offset the discount amount corresponding to the coupon when users purchase designated stores or goods on the platform. The platform bears the discount amount on the coupon, and the merchant issues an invoice to the platform for the corresponding amount of the coupon for the cancelled coupon; Anchor coupons: Coupons set by experts can be used to offset the corresponding amount of the discount when users purchase designated goods in the anchor's live broadcast room. The anchor bears the discount amount on the coupon, and the merchant issues an invoice to the anchor for the corresponding amount of the anchor coupon for the cancelled anchor coupon; Merchant coupons: Coupons set by merchants, users can use them in stores.