Late Ming: Rebuilding the World, Starting in Liaodong

(Late Ming) + (no System) + (Late Ming) + (wildly gratifying power fantasy) Bad news: I've transmigrated to the end of the Ming Dynasty as a border scout. Good news: I'm unbelievably strong and a master of martial arts! In the sixth year of the Tianqi reign, the Eight Banners beyond the passes are about to trample the land of China. They intend to turn every Han Chinese into a slave! Inside the passes, thousands of miles of land lie barren. The Central Plains are desolate in every direction. Where is the homeland now? Before the Battle of Ningjin, Liu Ping transmigrates as a scout captain in the Liaodong border army. Faced with a corrupt court, an incompetent emperor, brutal Tartars, and rebels rising everywhere, Liu Ping chooses to tear it all down and rebuild the glory of the Han people from the ruins! What? You say the Later Jin's Bayara guards are unbeatable in the field? Let's see how they fare against my armored cavalry, clad in double-layered iron and skilled with bow and horse! What? You say the Donglin Party wants me dead? Look at my hundred thousand fierce warriors. Zhu's descendants are everywhere under heaven. If I don't like it, I'll replace the lot of you! Chongzhen: Compared with Liu Ping, I really am a foolish ruler. Li Zicheng: Your Majesty's benevolence toward the people is without parallel in the annals of history. Hong Taiji: If Liu Ping was born, why was I, Hong Taiji, born too? Wu Sangui: Changbo has found Your Majesty's favor, like a fish finding water. Cao Bianjiao: Your Majesty has given Bianjiao a new lease on life. Years later, when Liu Ping stands atop Chengtian Gate in imperial robes, the dragon banners of the Great Han have spread across the land of China...