Group 1 - The Yonghui Supermarket in Tongzhou Wanda Plaza has reopened, marking the first store in the city’s sub-center to adopt the "Fat Donglai" model, which has been upgraded based on previous experiences to enhance shopping experience for local residents [2] - The store features a wider aisle of approximately 4 meters, allowing three shopping carts to pass simultaneously, and shelves have been lowered to 1.6 meters for easier access to products [2] - The product selection has been diversified, including seasonal items for upcoming festivals and a combination of direct supply from Yonghui farms and local seasonal products [2] Group 2 - The store has increased the proportion of freshly made products to about 20%, with new baked goods introduced based on community voting [3] - Enhanced customer services include the provision of disposable utensils at various service points, free health monitoring equipment, and a newly added dining area offering snacks and beverages [3] - Employee benefits have improved, with a 30% increase in overall salaries, reduced working hours to an average of 8 hours per day, and 10 days of paid annual leave after one year of service [3]