I, the Villainous Tyrant, Have the Entire Court of Loyal Ministers on Their Knees

After transmigrating into the doomed background character of a foolish emperor, Lin Yuan kills the protagonist who tries to force him from the throne from the start, then crushes the court with an iron fist. Familiar with the original story, he seizes the protagonist's opportunities, tames the heroine, and turns the tide with a million dan of grain, embarking on a tyrant's rise to power. Beneath imperial authority, everyone is a pawn.