Great Ming: First Slay the Emperor Who Surrendered, Then Destroy the Oirats

[Ruthless, Iron-Fisted Emperor, System, No Goody-Two-Shoes, Firearms Dominate All] I transmigrated into the body of Emperor Jingtai of the Ming dynasty, Zhu Qiyu, and from the start, it was the Coup of the Doorway? At that very moment, the Emperor Who Called on the Mongols, Zhu Qizhen, is shouting outside the palace, while the court officials demand that I abdicate! In history, Zhu Qiyu was weak and was killed, and the Ming dynasty went from prosperity to decline? "To hell with history! I'll strike first!" [Ding! Iron-Blooded Empire System activated. Newbie gift pack: 300 death warriors, the Strength of a Conqueror!] Zhu Qiyu raises the emperor's sword and, right before the assembled court, cuts off Zhu Qizhen's dog head with a single stroke! Kill Shi Heng, execute Xu Youzhen, and skin corrupt officials alive! Yu Qian: "Your Majesty, 200,000 Oirat troops are at the city gates!" Zhu Qiyu looks at the cannons and ranks of flintlock rifles redeemed through the System. "Excellent! I could use some more heads to build a viewing mound!" If this realm is destined for chaos, then I'll fight my way to a world of peace and justice! (The synopsis doesn't do it justice. Read the story. The first three chapters are packed with action. If you're not satisfied, come find me and take a swing!)