Anti-Japanese War: a Prodigal Son on the Surface, a Spy King Secretly

Travel through 1913 and become Lu Chengxiao, the eldest son of Marshal Fengtian. Everyone knew that Young Master Lu was an ignorant idiot, but little did they know that he had already been secretly in charge of the most terrifying organization. Sorry, your plans were on my tea table yesterday. Lu Chengxiao acted like a prodigal. "From today on, foreign powers are prohibited from entering this black land!"