The God of Border Guards: from the Ragged Fort to the Cyber ​​Pass

[No system + no stallion + no gold finger + rebirth + history + no high technology + late Ming Dynasty + iron blood] Chen Yuan, an expert in modern military history, traveled to the Shanxi Zhenlu Guards in the seventh year of Chongzhen (1634) and became a down-and-out flag officer in the guard station. At this time, the Ming Dynasty was experiencing internal and external troubles. Chen Yuan started from a dilapidated fort, conquered all the talented people in the late Ming Dynasty, built an iron-blooded army, destroyed the Jin Dynasty, pacified Mongolia, suppressed bandits, slaughtered Donglin, deposed the vassal king, built a navy, and colonized the world!