A Life of Immortality Starting from Immortality

When I was eighteen years old, my spiritual energy revived and all the people became immortals. When I was a hundred years old, I accomplished nothing in cultivating immortality. I was afraid that I would become a withered skeleton and have no friends or relatives. When I was two hundred years old, even I was surprised. I lived to be two hundred years old, but I still accomplished nothing in cultivating immortality. ... It wasn't until I was 800 years old that I finally broke through to the stage of Qi training, but all the things I knew were no longer alive in the world, and I survived them all. So much so that I'm surprised how I survived as long as I did. When I was 1,000 years old, I thought my life was approaching, but not only did I not die, I also received the Immortality System, which promised to help me achieve greatness! But... Why should I pay for the operation of the system with my lifespan! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.