5.3% off. In McDonald's buy package, package as you like, group buy up to 5.3% off, group buy only 8.9 yuan, 7000+ stores nationwide, limit 1 time per day. McDonald's is a large global multinational restaurant chain, founded in 1955 in Chicago, the United States, has 30,000 stores in the world. Mainly sells hamburgers, as well as fries, fried chicken, soda, ice, salad, fruit and other fast food.