The thing that Su Yun regretted most in his life was that the prefect followed the rules. Is it natural to pay back debts? Even if he sells his blood and life, what he gets in return is that the creditor wants to dig out his eyes to pay off the debt! In desperation, Su Yun obtained an ancient book called "Tianji Jue" left by his grandfather. This shabby book that his grandfather used to stand on the table was actually the only secret book on cultivating immortals in the world? Cultivation? In this cannibal city, cultivating immortality is not for immortality, but for survival!