Chen Jun is Chen Yaodong's cousin, about the same age as Chen Hao. He has many friends in Guancheng. He is sent to investigate Tang Shaojie and verify if Cao Yang is a real subordinate. He confirms Cao Yang's existence and murder case in Guancheng. He accompanies Chen Yaodong to Tashe Printing factory. He is described as having plenty of friends in Guancheng.
