Have you ever gambled with Boss at the Jade Mystery in Chihu Rock? The game was very similar to that. There were 20 boxes available of which we were to choose one. But instead of random qualities of jade being stored in the box, there were punishments ranging from leaving the game unharmed to death.

As the rounds wore on and more punishments were eliminated, the host would come to offer you a deal in place of what was in the mystery box. Being electrocuted for example. Or needles - though the description of that one was not all the specific.

If you did not take his deal, you were left with the punishment that was in the original box you had chosen.