Mao Renfeng is considered a student of Dai, Dai single-handedly created the Junta, Mao Renfeng was a director, Dai died before Mao took over as director.

Mao Renfeng and Dai are both from Jiangshan. The backbone of Dai's junta was the Jiangshan line. Mao Renfeng was Dai's favorite general. Junta to the late stage of the development of very powerful, directly under the agent more than 50,000 people, the Junta's intelligence the world's first, well-organized, mobile and flexible.

Later Dai's plane crash Dai died in Daishan, Chiang Kai-shek has both joy and sorrow, joy is finally removed a beloved danger, sadness is that he can no longer find people like Dai's loyalty to him. After Dai's death Zheng Jiemin became the director, but in order to appease Dai's junta Jiangshan Gang had Mao Renfeng as deputy director.

Expanded:

Mao Renfeng was indeed a good hand, but still nowhere near as good as Dai. The Junta carries a deep "Dai's brand", from the Investigation and Communication Group to the Fuxing Society's Special Branch, and from the Fuxing Society's Special Branch to the Junta, Dai has always been in control of this secret service organization.

Even though the Junta was changed to the Secret Service after Dai's death, most people still call it the Junta, and Mao Renfeng can't even keep the Junta's signboard, so it's clear that Dai and Mao are stronger and weaker.

While Daiasa pulled Mao Renfeng into the Junta, he never took him as his successor to cultivate, and Daiasa's intended successor was actually Shen Drunk.