When the Night Falls, I Rely on the Sages' Books to Build a Shelter

A strange night has fallen. Humanity is living in the few remaining core cities. Outside the city wall, a large area of ​​land turned into wasteland and became a paradise for strange things. Until Bai Yan came through time and bound to the lord system. Start to build your own power in the wasteland step by step. When the overwhelming treacherous tide hit, Bai Yan opened the "Spring and Autumn" Chapter of Troubled Times, and a flash of inspiration flashed in his mind. The history pen is like a knife, how can it not cut off the evil spirits? "Small words and great meaning, Spring and Autumn style of writing!" Overnight, the [Spring and Autumn Ink Cannon], which used scriptures as a guide and awe-inspiring righteousness as a cannon, was set up on the city wall. Many years later, the final disaster struck. In despair, Bai Yan took out the volume of "The Book of Changes" and slowly unfolded it. The sixty-four hexagrams flew out together, Qian became the sky, Kun became the earth, the six lines turned into dragons, and a dragon-veined Great Wall suddenly rose from the ground! Bai Yan stood at the top of the city with his hands behind his back, his robes making a rustling sound. "Human territory." "Anyone who dares to step in will be killed!"