The Only Person Who Cultivated Immortality in Prehistoric Times Was Exposed

Li Xian traveled to a parallel world for eighteen years. On the verge of death, he obtained an archive of prehistoric immortal civilization. Historical changes, the passage of time. What is the truth buried in the long river of time? Where should humans go in the face of unknown existence? When darkness invades, so-called advanced civilizations are nothing more than bloodless "animal herders." The spark of inheritance was ignited again. This is a guide to teach you how to cultivate immortality. Also known as the Prehistoric Guide to Immortal Cultivation, the Last Immortal Cultivator, and the Eternity of the Human Race. The introduction is short and weak, so please move on to the main text to read. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.