What is a costume slapper?

Refers to an ancient method of corporal punishment.

Used to punish those who violate certain social norms or moral principles. This method of punishment is to have the offender take off his shoes and stand on a wooden board with his hands tied behind his back. A thug will use a long whip or stick to whip the offender's palms. In ancient China, this method of punishment was considered a very severe punishment and was only used for those who seriously violated the law or moral principles. This method of punishment will not only bring physical pain to the offender, but also mental humiliation and torture.