The Supreme Asura

A legendary soldier dies unexpectedly in M Country while carrying out a top-secret national 3S mission. His soul, however, travels through a space-time tunnel and transmigrates to an unknown world. There are no firearms or modern tools in this world, but it possesses the most ancient and mysterious powers. Li Dong, a legendary military king, arrives in this strange land by chance. What kind of upheaval will he bring?