websites or apps that provide food coupons. According to the WeChat public platform, if you buy a buffet annual card in Shenzhen, you can go to some websites or apps that specialize in providing food card coupons, such as Meituan and Public Comment. These platforms usually have discount card coupons from various merchants for consumers to choose from. When choosing, you need to confirm the brand, scope of use and expiration date of the buffet annual card. And in order to ensure the rights and interests, it is recommended to read the purchase instructions and after-sales service terms carefully before buying.