Laogai, the abbreviation for Láodòng Gǎizào (勞動改造), which means "reform through labor,"'s a slogan of the Chinese criminal justice system and has been used to refer to the use of prison labor and prison farms in the People's Republic of China (PRC). It's estimated that in the last 50 years more than 50 million people have been sent to laogai camps. Laogai's distinguished from laojiao, or re-education through labor, which's an administrative detent… (More on Laogai)