Group 1 - The core point of the article is the opening of the Sam's Club store in Changping, Beijing, which is the 61st store nationwide and the 5th in Beijing since 2003 [1] - The Changping store features various services including trial experiences and specialized equipment for youth, along with multiple online delivery options such as "Express Delivery" [1] - The "Express Delivery" service offers over a thousand frequently purchased items, catering to members' immediate needs for high-quality products [1] Group 2 - Sam's Club is actively promoting green energy initiatives, introducing a "ultra-low carbon" CO2 refrigeration system that minimizes carbon emissions and allows for heat recovery [3] - Walmart China reported a net sales figure of $6.1 billion for the third quarter, reflecting a year-on-year growth of 21.8%, with Sam's Club showing strong growth momentum [3] - The number of transactions at Sam's Club has seen double-digit growth, with 8 new stores opened in the past 12 months [3]