Four Brothers, Human, Ghost and Demon, Conquer the World

[Supernatural + Suspense + History] How did one person, one ghost and two demons become brothers? What does the three-headed eagle represent? The four Gongsun Bao brothers returned from Kunlun Mountain to study martial arts, and they acted chivalrously and rectified violence. They were involuntarily involved in the overt and covert struggles between Emperor Kangxi, Wu Sangui, and Galdan. After layers of fog, all kinds of things in the world are gradually revealed, and there is a desperate showdown between good and evil. Heroic sons and daughters, feelings of family and country. Unexpectedly, besides the three parties, there is an invisible black hand...!