I Learned How to Slay Demons in the Library

[No system + doomsday survival] [Urban martial arts] [Suspenseful imagination] [Evolutionary variation] Have you ever thought about how many evocative legends of sages have accumulated in the five thousand years of civilization? Have you ever thought about how much blood, tears and cries of sages are hidden behind the separation of humans and gods? Have you ever thought about how many guardians of the new era are silently taking over the banner of the sages in the bizarre cities and mountains? Countless monsters from ancient myths have reappeared in the human world; How can human beings without the blessing of the ancestors of the human race find a glimmer of hope in the age of the end of the Dharma? At dusk and dawn, Zhang Fan was in the library, traveling between two realms. While returning to the mountains and rivers, the truth behind this strange flood was slowly revealed. Where did the Jiuding used by Dayu to control the floods go? How can the God-blessed ones who awaken in that sequence restore the glory of the ancient sages and save the mountains and rivers that are on the verge of being broken again? I, Zhang Fan, will have no regrets even if I die! Save the people I love and kill all the fallen monsters! Within the Tang Dynasty, demons are forbidden to travel!