1. For McDonald's 24-hour stores, breakfast is served from 5:30 a.m. to 10:30 a.m.
2. For non-24-hour stores, breakfast is served from 7:00 a.m. to 10:00 a.m. Customers can buy breakfast in-store or order it through takeout. The breakfast is served from 7:00 a.m. to 10:00 a.m. Customers are advised to arrive at the restaurant about half an hour before the breakfast hours open so as not to miss the breakfast ordering time. However, some McDonald's restaurants in some areas may offer longer breakfast service, for example, some restaurants in Shanghai have breakfast hours of up to 12 hours, some restaurants in Guangzhou even up to 14 hours, and some restaurants in Chengdu provide breakfast service from 5:00 a.m. for up to five hours.