SocietyTracking down adulterersTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoSociety05/13/2017May 13, 2017Twenty years ago, Zhang Yufen found out that her husband was having an affair - and divorced him. After that, Zhang became China's first female private detective - usually tracking down wealthy men who cheat on their wives.https://p.dw.com/p/2cu7VAdvertisement