A Hundred Years in Seclusion, and I Got a Godslayer Spear from the Start

He transmigrates to another world, where the System appears. After a hundred years of seclusion, he becomes the family’s founding ancestor, and gets the Godslayer Spear from the start. “Ancestor, the family’s cultivation techniques are terrible.” “Want divine-level techniques?” “Ancestor, a saint has come to attack us.” “My pet bites. Careful, or it might swallow the saint.” “Ancestor, the holy maidens from the Nine Heavens and Ten Lands are here!” “Damn, you have to ask me about that too? Give one to everyone…” Honestly, once you become an invincible ancestor, even your descendants can walk around with impunity!