No 7 Li Yanhong and Ma Dongmin (couple)
Wealth: 125 billion yuan ($18.90 billion)
Company: Baidu Inc
Industry: Search engine
Li Yanhong, co-founder, chairman and CEO of Baidu Inc, delivers a speech at a forum on AI during the fourth World Internet Conference, also known as the Wuzhen Summit, in Wuzhen, East China's Zhejiang province, Dec 4, 2017. [Photo by Zou Hong/China Daily]