According to this piece A provincial appeals court has issued what it says is China's first ruling that confessions or evidence obtained by torture, trickery and coercion can't be used in court.
The decision came in a case in which a man falsely confessed to killing his wife. The confession put the guy in prison for 11 years, and nearly sent him to his death
How do we know the confession was false? His wife came back to the village. She explained her 1994 disappearance by saying she left him for another man.
Oops. Maybe there is something to that coerced intelligence ain't good intelligence thing.