Ninety-Nine Years

Humans in this world can only live to the age of ninety-nine, also called the ninety-nine limit. Creatures that break through this ninety-nine limit are called "immortal species." The war between immortal species and humans has lasted for more than ten centuries. Nian An, an ordinary human being, came from death, carrying bone-gnawing hatred, and walked step by step towards the top of the world.