Did not respond to the challenge. The expressionless Japanese variety show is called "No Response Challenge". In the "unresponsive challenge", participants need to keep a straight face when accepting tricks, and no matter what happens, they can't have obvious emotional reactions. The content of pranks may include uncomfortable scenes, scares or pranks. In order to test the endurance limit of the participants. In this process, the program will record the participants' reactions and analyze their emotional changes and psychological state.