Open for business at 11:00 pm. According to the official website, Quanjude is a well-known brand of food and beverage, and its opening hours will vary depending on the area and store, Quanjude Roast Duck Restaurant (Wangfujing): opening hours for Monday to Sunday 11:00 to 21:00 p.m. Quanjude Roast Duck Restaurant (Qianmen): opening hours for Monday to Sunday 11:00 p.m. to 20:00 p.m.