The Pinnacle of Immortality in Another World

Traveling through a different world, there are powerful cultivators who pretend to be gods, living in the sky and commanding all nations, and there are huge monsters that enslave humans. Lin Fei, who has mediocre qualifications, thought that this would be the end of his life, but he never expected that he would successfully awaken the Immortal Sign-in System. If you sign in successfully, you will be rewarded with one week of life after signing in for one day! If you sign in successfully, you will be rewarded with one month of life after signing in for one week! … Lin Fei originally thought that he would eventually become a thousand-year-old demon in this life, but the lifespan trading mall opened by the system made Lin Fei feel that he might die young. What? Dare you upgrade to a level and have a lifespan of one year? Why don't you go and grab it! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.