Time and Space Rift, I Traveled to Ancient Times and Wanted to Unify the World

Han Xiaolong traveled back to the Southern Song Dynasty. Use your modern knowledge to make guns and cannons. Unifying the Chinese mainland, chasing the Jin people, destroying Goryeo, and destroying Japan... Along the way, there were many wives and concubines, and at the same time they were extremely dangerous, composing a heart-stirring history of world conquest. But is he the only one who travels through time? Obviously not...