I Put a Unicorn Arm on Guan Yu

The history of the universe is tens of billions of years, and the Han Dynasty is only a few hundred years, a drop in the ocean. The wings of a butterfly in Mexico stir up a storm in the Pacific Ocean. Cheng Fei took the artifact Qilin Arm and traveled through time to become Guan Yu. What impact would this have on the history of the Three Kingdoms, and what impact would it have on the entire human race? Gods, demons, and technology seem to be far away from the Three Kingdoms. Is this really the case? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.