Anti-Japanese War: I Am the Enemy's Killer Weapon

Mountains and rivers are shattered, the Japs are massacred, and wars are rising across the land of China. The protagonist who travels back to 1942 accidentally obtains the Ruyi System... From then on, he begins the journey of conquering all directions... To kill the Japs... Wherever he goes, the Japs are everywhere... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.