McDonald's business hours are limited, but not uniform. It depends on where the store operates. For example, in high-speed railway station, near the airport and other places, not only the time will be set differently, but also the meals and overall business model of stores will be different.
The brand of McDonald's is as famous as KFC. They entered the market in tandem, so they have the same strength in the domestic fast food market, and retail has gained more recognition from Chinese people.