[History + Imagination + Military + Struggle for Hegemony + Machiavellian Strategy + Sober Character + Single Female Protagonist (Comed Later) + Human Nature] Not brainless, but slightly warm.
Once he traveled back in time, he became the legitimate son of King Li Keyong of Jin during the troubled times of the Five Dynasties and Ten Kingdoms. Before he could enjoy the happiness of being an "actor emperor", he discovered that the court building of Li Tang Dynasty was about to collapse. Zhu Wen was eyeing him in front of him, and Liu Rengong of Youzhou rebelled in the back. The cheap man Li Keyong was unable to survive alone, and the tragedy of "Three Arrows' Legacy" was about to be staged. At the critical moment, Li Cunxu, the eldest son of the Jin Dynasty, persuaded his father Li Keyong to abandon personal grudges and consider the overall situation. Then he became famous in one battle. A battle for hegemony that will determine the pattern of the world has begun.