Group buying is generally an activity initiated by commodity merchants on the website, which is equivalent to inviting customers to buy collectively (or understanding it as group buying in bulk). The group purchase price is lower than the usual retail price, and the merchants win with small profits but quick turnover. It can be understood as "limited-time discount Promotion".

Sometimes, group buying can be initiated by member customers. If a member wants to buy a product, discuss it with the seller. For example, if the seller says you want to buy 10 or more than 20 pieces, I can give you a discount. Then, the member will post the group purchase information online to see if he can gather enough customers with the same needs in a limited time. When the number of scheduled group purchases exceeds the minimum limit, the group purchase is successful, otherwise, the group purchase activity is suspended.

Group buying activities of big businesses like Suning are basically initiated by businesses, including Amazon, JD.COM Mall and Taobao sellers, which often (even every day) have different products. Merchants also rely on the group purchase of some commodities to attract more consumers.