I'd better answer it, briefly. 1: Cost is the most important issue. 2. Dishes should be cost-effective to make customers feel value for money. 3. It is easy to get together and eat, resulting in complaints that the service can't keep up. You should book in advance. 4. Location problem, customers are only local people, unlike other large chains such as KFC. 5. Group buying is nothing more than propaganda in disguise, so do this task well, not just to make people eat. These are basically the kinds.