Who is the boss Chen of the Central Committee, Dai Li of the Military Committee and Mao Renfeng? What is the relationship between these three people in their positions?

Boss Chen of Zhongtong means that the boss of Chen Lifu Juntong is Dai Li, and Mao Renfeng succeeded to the post of director after the plane crash in Dai Li (later Juntong was renamed as the Secret Service). At the beginning of Juntong (when Dai Li was not the boss), Chen Lifu took charge of the first post (which later developed into Zhongtong) and the post of director (it seems that, I forgot, I'm sorry), and Dai Li took charge of the second post (which was later expanded into fame). But basically, the military system is just a signboard. Dai Li and Mao Renfeng were expanded into the Bureau of Investigation of the Military Commission by the second place. They are fellow villagers, Dai Li is the deputy director, responsible for the specific affairs in the bureau, and Mao Renfeng is the secretary (the highest position he has ever held is the acting secretary director). Please point out if there is anything wrong with the relationship between the superior and the subordinate, and ask O(∩_∩)O haha ~