Yao: Male, born in 1960, China nationality, with no permanent residency abroad. Tsinghua University graduated with a doctorate; 1September 1989 to1May 1992, postdoctoral fellow, University of Science and Technology Beijing; 1June 1992 to1June 1995 as a researcher at Kyoto university; /kloc-0 has been teaching in Tsinghua University since July, 1995, and is now a professor. 20 19 has been an independent director of zhaolong internet since April. Yao obtained the qualification certificate of independent director of listed companies in Shenzhen Stock Exchange on February 28th, 20th17th.