Definition of "Sanmenxia"

Law enforcement in the central Chinese city of Sanmenxia, along the Yellow River, ran a system that over the course of a month this year screened whether residents were Uighurs 500,000 times.

2019 April 14, Paul Mozur, “One Month, 500,000 Face Scans: How China Is Using A.I. to Profile a Minority”, in The New York Times‎, archived from the original on 2019-04-14, Technology‎