When the End Comes, I Will Be the Only One Cultivating Immortality

I traveled through the world of cultivating immortals, but I had no spiritual roots. I had practiced for hundreds of years before entering the foundation-building stage. In a great crisis that wiped out the world of cultivation, in order to preserve the seeds of the world of cultivation, my master ran an inverse space array to teleport me back to the world before I traveled. I thought I could show off my skills in the foundation-building stage, but I didn't expect that a hundred years had passed since the original world. Alien species invaded and mutated beasts ran rampant. Human technology and thermal weapons had no lethality in front of the invading species. The only people who could fight against them were those with super powers! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.