Jin Yiwei, Starting from Slaying Demons and Becoming Stronger

Bad news: I traveled through the Ming Dynasty and became cannon fodder. Evil spirits were rampant in the dynasty and all the officials were reduced to food rations! Good news: Awakening the [Unlimited Monster Killing] system, the better I kill monsters, the stronger I am! While his colleagues were still complacent about ten years of Taoism, little did they know that Shen Hao had killed thousands of demons and his cultivation had skyrocketed for a hundred years! The commander of the Zhenfu Division colluded with the thousand-year-old tree demon to subvert the imperial power? Sorry, I killed both the human and the demon with one knife! Many years later, when evil spirits flooded the capital, the emperor was in despair. Shen Hao is standing on the top of the Forbidden City with an embroidered spring knife on his waist, with thirty thousand miles of bloody swords behind him! "I am a royal guard, and I should kill all the evil spirits in the world!"