Kill Demons for a Hundred Years and Become Invincible After Birth

Xun Fang traveled to the Yu Dynasty and became a minor official in Qingshui County. In this world, martial arts are flourishing, but demons are rampant. Xun Fang accidentally obtained the system, and he only needed to spend his lifespan to perform deductions. From the Monument Breaking Technique to the Nine Nether Dragon Capturing Technique, from the Bone Forging Technique to the Heavenly Lord Subduing the Demonic Body! ... A hundred years later, the demons caused chaos and defeated Dayu. The capital of Dayu is about to be lost. Xun Fang, dressed in a green shirt, stood at the top of the city and drew his sword from its sheath. "What kind of demon is causing trouble and dares to disturb the peace of the world!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.