Z hong Huijuan is one of the world's wealthiest self-made women, who has built a massive fortune in the pharmaceutical industry. She is the founder and chairwoman of Hansoh Pharmaceutical Group, a major Chinese drugmaker. A former chemistry teacher, she founded the company in 1995. She has since built it into a major player in the Chinese pharmaceutical market, with a focus on producing drugs for a number of major therapeutic areas, including oncology, central nervous system diseases, and diabetes.

Hansoh has a strong portfolio of both generic and innovative drugs and has invested heavily in research and development. She took the company public on the Hong Kong Stock Exchange in 2019, a blockbuster IPO that made her one of the richest women in Asia. She is married to Sun Piaoyang, the former chairman of the pharmaceutical giant Jiangsu Hengrui Medicine. Together, they are one of the world's wealthiest healthcare power couples, with each having independently built a separate, highly successful pharmaceutical empire.