I Was Expelled from School and Became an Ace in the War Zone

Our world has been folded. The immortal side, the supernatural side, and the magic side—three different worlds overlap with our world, and our world is the one with the most abundant resources among all, and it is also the one that is coveted by everyone. When Xuanwu Academy returned a student named Gu Yan, no one would have known that he would become the sharpest knife in the five theaters.