Immortality, I Rely on Survival Rewards to Cultivate Immortality Freely

Yan Ruyu got lucky and got a once-in-a-lifetime opportunity to travel through time. Looking at this world of immortality where one can cultivate immortality even without spiritual roots, and the five spiritual roots are the ultimate spiritual roots that are unique among ten thousand, I burst into tears. I don't think that's what is written in the novel. But once you get there, make peace with it. I am equipped with a survival system and have an unlimited lifespan at the beginning. As long as I am still alive, you will fight me for what you can do. Thousands of years later, my splendor will still remain the same, but I am afraid that you may have turned into loess long ago. The protagonist is a sound practitioner + a formation practitioner, but he also knows some other skills. After all, he can survive for a long time.