County Magistrate Tang also instructed him, "In small villages and towns, there's hardly anything that can be hidden from the local chief. You should ask the chief, and if you still can't get any information, find a villager who is timid, afraid of trouble, and is poor. Arrest them on any pretext, scare them a bit, and you will get your answers."
"Interrogating a case also requires some tactics. Once you've arrested someone, don't inquire progressively, just ask the question you most want to know, the one you are sure the other party knows. Even if you can't get an answer from their mouth, you should be able to tell from their face, from their eyes."