Mi Zhendong was an orphan in his early years. He, Fu, Chang Zilong and Shu Like all grew up in an orphanage run by Bai. They have a good relationship and regard Bai as their parents, while Bai's own daughter, Bai Xiaolian, is more like brothers and sisters.
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Mi Zhendong appeared in the first episode. Before Zheng Rui defeated Shen, Mi Zhendong and Shen walked together. Later, when Zheng Rui hit Shen, Mi Zhendong squatted in the corner.
Mi Zhendong is a key figure in the case of Zheng Rui beating Zheng. If Mi Zhendong can tell the truth of this matter, he will certainly make contributions and reduce his sentence, but he chose not to tell the truth, so from this point, he can feel that he has no signs of wanting to get out of prison early. At Mi Zhendong's home, we also found many suspense books of reasoning types, which shows that he may commit crimes.
Baidu Encyclopedia-Mi Zhendong