Torture is a strong word. You better back it up, there is no logical reason for the Chinese government to `torture` them.
> Pre-trial detention in China is used as a weapon of duress which, in its aggregate, adds up to torture. The accused are held in harsh conditions in a “detention center” designed to break resistance and crush the human spirit in order to extort a confession. As a result, such self-incriminating confessions, when they happen, are false. The following description of those detention conditions comes from my own experiences during 23 months in captivity, in addition to listening to and reading about other prisoners’ experiences, including conversations with prisoners released in 2019.
Full description: https://thediplomat.com/2019/12/the-cruel-fate-of-michael-ko...