1. Business model: Group buying websites offer goods or services at lower prices by cooperating with merchants to attract consumers to participate in group buying. When the number of group buyers reaches a certain number, merchants will provide goods or services to consumers at agreed discount prices.

2. Technical support: With the help of Internet technology, Meituan.com, Handan.com and other group-buying websites have realized the functions of real-time updating of commodity information, processing of consumer orders, convenient transaction payment and so on. These technical supports make the group buying process more efficient and convenient, and further promote the development of the group buying market.