Chinese woman’s mundane query turns into surreal court scuffle
为证明“姐姐是姐姐”，她被拘留15天
The New York Times, May 5, 2016
EN: http://www.nytimes.com/2016/05/05/world/asia/china-police-justice-systems.html
CH: http://cn.nytimes.com/china/20160505/c05chinaletter/