I Established a Safe Zone in the World of Monsters and Ghosts

Screenwriter Li Xuan opened his eyes and found that he had become a sacrifice to the river god. I thought it was a dream, but later I realized it was a time travel, and the situation was very bad. When he was about to be skinned to death, a wordless heavenly book appeared in front of him. The heavenly book derived from the book domain. Within the scope of the book domain, he could speak and speak, but at the cost of burning his lifespan. Good news: Yan Ling is invincible. Bad news: Not enough lives. What's even more deadly is that the humans in this world are just food for demons and ghosts, just like livestock, surrounded by dangers. Fortunately, the more people there are in the Book Domain, the longer his life span will be. So Li Xuan turned into a kryptonian maniac and started the great cause of building a village. Enlighten monsters as protectors, deduce exercises, elixirs, etc. As benefits, and give mortals the bones to cultivate immortality. Attracting more and more people to move in, the territory of Book Domain will continue to expand and become a safe zone for the human race in this cannibalistic world. This book is also known as "I spend my life building infrastructure in the world of immortality", "I am really a longevity emperor", "The more people there are, the longer I live, this is reasonable, right"...