After Hundreds of Reincarnations, I Will Prove Immortality by Killing

Immortal is the biggest lie. In this world, mortals only have a lifespan of less than a hundred years. On the day of their 100th birthday, they die suddenly and mysteriously. Even if you embark on the path of immortality, you can only borrow your life from heaven for ninety-nine years every time you break through a realm. In order to become stronger and survive, the entire world of immortality has turned into a huge millstone of flesh and blood. Bai Lie came through time travel and struggled for ninety-nine years, but in the end he never found his destiny. Until the day of the 100th birthday party, the "immortal" came and slaughtered the whole village, old and young, just to refine a "longevity stone" to extend life. In a pool of blood, Bai Lie awakens to the treasure [Book of Hundreds of Worlds], which can be reopened after death. Not only can he inherit his previous life's cultivation, but he can also accumulate the knowledge of hundreds of lives. In his first life, he sat in the ruins for thirty years, using his mortal body to deduce the fragments of immortal magic. In the second life, he took advantage of the general trend of heaven and earth to set up a desperate formation and used the second level of Qi refining to reversely kill the demonic cultivators in the upper realm. In the third life, he stripped off his identity as a genius and used Li Daitao's plan to cross the sea and step into the fairy gate of the upper world! There is no chance of creation out of thin air, only step-by-step calculation. Since God's will is like a sword, all immortals and demons are ghouls. Then I, Bai Lie, will calculate all my secrets in reincarnation, use the immortals and demons in the world as my resources, and work my way up to true immortality step by step!