Baidu lists 4 executives, led by Yanhong Li, Co-Founder, Chairman & CEO (age 56). Haijian He C.F.A. is the company's Chief Financial Officer (age 43).
The average age of the executives with a known age is 49; the youngest is 43 and the oldest 56.
Titles, ages and pay from company filings.

Co-Founder, Chairman & CEO
Chief Financial Officer
Director of Investor Relations
Senior Vice President and GM of IDG
Yanhong Li (Co-Founder, Chairman & CEO), age 56.
Haijian He C.F.A. (Chief Financial Officer), age 43.
Yanhong Li (Co-Founder, Chairman & CEO), Haijian He C.F.A. (Chief Financial Officer), Juan Lin (Director of Investor Relations) and Zhenyu Li (Senior Vice President and GM of IDG).