I'm not versed in Chinese law, but in Germany there are states where you can be imprisoned indefinitely for being a (vaguely (un)defined) danger: https://www.su

I'm not versed in Chinese law, but in Germany there are states where you can be imprisoned indefinitely for being a (vaguely (un)defined) danger: https://www.sueddeutsche.de/bayern/terror-abwehr-bayern-will-gefaehrder-unbefristet-einsperren-1.3397600 https://www.sueddeutsche.de/bayern/terror-abwehr-bayern-will... Of course there is some "due process" in that a judge needs to agree. But I guess some judge can always be found to agree to that vague stuff. So even in western rule-of-law societies, I think the Chinese situation could be justified in existing laws.