Labour camps that translates to 'reform through labour'.
By 1955 there were 1.3 million in forced labour.
Most were political prisoners, including 300,000 doctors, engineers and experts. Their crimes included listening to foreign radio or not meeting work quotas.
forced to build roads or mine in uranium mines.
Conditions caused diarrhoea and dysentery.
In Guangdong tin mines, 1/3 took their own life or died of disease a year after being there.
estimated 27 million total laogai deaths.