One stormy night last month, a driver surnamed He saw two tall men get out of a car in the southern Chinese city of Shenzhen and pull a young woman off the street and into the vehicle. During the struggle, her umbrella fell to the ground. She did not appear willing. Suspicious, He followed the vehicle and later reported the incident to local police, supplying them with footage he had recorded. Thanks to him and the police, the abducted 18-year-old was rescued from a forced marriage. According to...