Battle for the Heroes in Troubled Times: Summon the Korean and White Heroes at the Beginning

The protagonist Chen Feng, an ordinary history buff, accidentally traveled through a game called Blue Star Hegemony, only to find that he had chosen the hell level difficulty. The Chen State he took over was plagued by internal and external troubles. In the court, there are the ambitious Prime Minister Qin Hui and the evil general An Lushan who try to control the government; in the harem, the demon concubine Daji seduces the emperor's heart and disrupts the court. Externally, the powerful states of Qin, Chu, and Qi were eyeing the Chen State, and barbarians from the north often invaded the borders. The previous monarch even believed in the words of treacherous ministers, and his entire army was wiped out in a key battle. As a result, Chen State's morale was low and most of its territory fell. Later he discovered that there was magic here?