In this issue, the director invited Yu Ji, a micro-expression expert, to participate. In the three rounds of competition between the two teams, Yu Ji judged the psychological activities of the guests by observing their expressions. Yu Ji is the author of Micro Expression and Body Language. Participated in many national and provincial projects, developed psychological measurement tools such as military burnout, published more than ten influential papers in core academic journals at home and abroad, and won two medical achievement awards by the Armed Police. He not only appeared in the running man program, but also invited him to participate in similar extreme challenge programs. Recently, he has appeared frequently in the public eye, and he has been invited to participate in many programs.