Become Invincible by Refining Demons

Kill the monsters to obtain the magic source, which can be used for unlimited deductions. Lu Wushuang travels through the world of demons as a mortal and obtains the mysterious book The Book of All Things. He can kill demons to obtain the source of magic and deduce martial arts! From the "Nine-Yang Sword" to the "Nine-Yang Sky-Breaking Sword", from the "Pure Yang Kung" to the "Nine-Yang Burning Heaven Technique". Countless years later, when the fairies died, demons invaded the human world. When the entire human world was covered by demons, Lu Wushuang swung his sword with one hand and flew across the sky for ten days. Under the ten days of sunshine, the demons dissipate and the world becomes clear! Then the ten days merged into one, turning into a blue sky and white sun, shining on the heaven and earth!