My Ancestor Has Been Refining His Body for a Hundred Thousand Years, and I Am Killing Demons in the Human World

The ancestor climbed out of the coffin in his tomb 100,000 years later, shocking the world. So, as my ancestor's 100,000-year-old grandson of Xuanxuanxuanxxxx, I have since opened the most powerful cheat for men on the surface. Swinging my sword like a rainbow to slay demons, I have a great sense of righteousness in my chest. One sword kills a living being, one sword cuts off a soul. The two swords combined are unparalleled in the world. I am a hero. I, Lu Bai, want to be the human immortal who slays demons... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.