Shanghai Geng Jian Pharmaceutical Technology Co., Ltd., Guangdong Geng Jian Pharmaceutical Co., Ltd., Shanghai Yun Ze Biotechnology Co., Ltd., Shanghai Yiduxun Health Consulting Co., Ltd., Zhejiang Yunkai Yamei Pharmaceutical Technology Co., Ltd. and Shanghai Yunkai Pharmacy Co., Ltd. are all operated by the same enterprise. Geng Jian deals in transplant products, while other companies deal in pharmacies. Among them, Zhejiang Yunkai Yamei Pharmaceutical Branch mainly operates online pharmacies and sells drugs to patients through the network. Customer service representatives mainly answer patients' search for medical-related websites through search engines such as Baidu and sogou, and sell drugs directly to patients online through 400 telephone consultation, and mail them to all parts of the country through express delivery. Working hours are from 9: 00 a.m. to 9: 00 p.m., and the salary is about 2,000 yuan, plus commission for drug sales.