Eternal Sword God, Starting from the Invincible Sword System

I have a sword that can cut down the heavenly palace and destroy the underworld! I have a sword that shines through the nine heavens and shines through the ages! I have a sword that can kill enemies thousands of miles away with tenderness within an inch! I still have a sword that will last forever and be immortal! ... Yang Yu relies on the invincible sword system to create the legend of the sword god that belongs only to him!