In episode 17, when Chen Jiamei went to the prefectural committee to investigate Lv Xia, he stumbled upon a shocking plot. It turned out that Zhao Cheng, the current county magistrate of Sifangtai, was an impostor, and the real Zhao Cheng county magistrate had already died on the way to his post.

18 episode, the fake Zhao Cheng and the white ape meet at the Lanjia drugstore, and Chen confirms his guess that the fake county magistrate is a latent agent of the Kuomintang.

In the first episode 19, Zhao Cheng came to Chen's room. Chen saw through the real identity of the fake Zhao Cheng, that is, the third son of the Mu family, Mu Jie.