Yes In Shanghai, you can eat hamburgers for 24 hours. For example, Wallace, KFC and Shanghai KFC Yunling Store are open 24 hours a day. KFC is one of the multinational chain restaurants in the United States and the second largest fast food and fried chicken chain enterprise in the world. Founded by ColonelHarlandSanders on 1952, it mainly sells high-calorie fast food such as fried chicken, hamburgers, French fries, covered rice, egg tarts and soda.