The Villainous Empress's Favorite Minister: The Heroine's Sister in a Secret Room from the Start

Li Mocheng reincarnated as an early-stage villain in a wish-fulfillment fantasy novel he had read in his previous life. From the start, he kidnapped the protagonist’s younger sister and made an enemy of the hero. What was he supposed to do now? Fortunately, he activated the Strongest Villain System. The protagonist? Nothing but a plaything in his palm! “Protagonist’s little sister, you don’t want anything to happen to your parents, do you?” The protagonist’s fiancée: “Who’s the protagonist? I barely know him! Brother Cheng, I want more…” The Female Emperor: “Traitor, what are you doing…?”