T an Lili is a Chinese billionaire whose wealth is derived from her family's substantial stake in the Haisco Pharmaceutical Group. She is the wife of the company's chairman, Wang Junmin. While her husband is the leader and public face of the company, Tan Lili holds a significant number of shares in her own name, making her a billionaire.

Haisco Pharmaceutical is a company that specializes in the research, development, and sale of specialty drugs in China. The company has a strong focus on producing drugs for specific therapeutic areas, with a particularly strong market position in anesthetics and drugs for the treatment of liver disease. The company's growth has been driven by China's expanding healthcare market and its focus on high-margin specialty pharmaceuticals. The success of the publicly traded company is the source of the family's considerable fortune.