Of course, the participants can't bite Cheng Sheng, since they haven't realized, yet, what their real situation is right now. And, even if they did realize it, they couldn't bite Cheng Sheng, of course, even if he pitted them big this time. One, they highly respect him and, two, will Fei Yin let them?
Just thinking about the 'training' they had under Fei Yin's hands, they subconsciously shuddered in horror and felt their knees go weak. But, for now, let them live in ignorance for a while. It isn't good to serve all the 'dishes' at once, including the 'dessert'. They already felt greatly pressured just facing xiao Bao and xiao Ling. If they heard the news of them pitting themselves with their own hands, it would definitely be a big blow to them.
Thus, they shouldn't let them know the real 'game' for a while.