David Patterson, retired Professor Emeritus of Computer Sciences at University of California Berkeley and a recipient of the 2017 ACM A.M. Turing Award, speaks at the sub-forum "FinTech and Construction of a Social Credit System" during the fifth World Internet Conference in Wuzhen of Tongxiang, east China's Zhejiang Province, Nov. 8, 2018. (Xinhua/Huang Zongzhi)