Ignoring the fact that we've had prisoners, in places like e.g. Guantanamo, on and off who were/are held for decades without ever even being charged with anything, China has also charged its prisoners with crimes.

You don't agree with China's decision to make practicing religion a crime, I don't agree with the US's decision to make possessing drugs a crime. Both are "crimes" punishable by incarceration according to the two governments.