In the eighteenth year of Yuande in the Great Jin Dynasty, the red star crossed the sky for three days. Since then, the world has been in turmoil. Man-made disasters happen in prefectures and counties from time to time. Demons and ghosts hide in the night and want to take the opportunity to eat their stomachs and feet. Wang Yu got the black tortoise armor that can perform martial arts and came to this chaotic world that is about to collapse. Kill a world.