List of re-education through labor camps in China
Re-education through labor (RTL; in Chinese, laodong jiaoyang 劳动教养, abbreviated láojiào 劳教) is a system of administrative detentions in the People's Republic of China. The estimated number of detainees in re-education through labor camps is anywhere from 300,000 to 2 million.
Source: Wikipedia — List of re-education through labor camps in China (CC BY-SA 4.0)