Peking University, Zhejiang University, Nanjing University. Zhejiang University has established a direct selling department, Peking University has established a China direct selling research center, and Nanjing University has established a "direct selling research center". According to the definition of the World Direct Selling Alliance, direct selling means that manufacturers sell goods and services directly, and direct sellers bypass the traditional wholesalers or retail channels and directly accept customers' orders.