The Great Wu Watchtower

Wu Hao, a modern-day elite, awakens in the body of You, crown prince of Wu, after Wu's defeat at Fuchai. With Fuchai's arrogance and Bo Pi's corruption to contend with, he works quietly to reform the state and win over allies. He foils Goujian's surprise attack and takes over Yue's territory, then forces his father to abdicate and ascends the throne. He introduces new policies and reforms the army, then uses distant alliances and nearby conquests to eliminate the other states. Wu's destined collapse after just two generations becomes the opening of a unified empire.