Zheng Long, a modern (approximately 1907-1968) professional soldier, traveled back to the early Ming Dynasty (the third year of Hongwu's reign - the fourth year of Hongwu) due to a nuclear explosion and the turbulence of time and space. By chance, he rescued a man who had escaped from the palace in Liaodong by chance. The fourth prince of the army, King Zhu Di of Yan, and the eldest son of Cao Guogong, Li Jinglong, later experienced the Battle of Mobei, defeating Nahachu, Manzi, Halazhang and others, and thwarted the attempt of the King of Qi and Prime Minister Wang Baobao of the Northern Yuan Dynasty to gather together to annihilate the main force of the Ming army under Hala and Lincheng in Mobei. After that, Zheng Long experienced a series of major historical events such as Yang Xian's case, Hu Weiyong's case, pacifying the Japanese invasion, and going north to conquer Yuan Dynasty. He helped Zhu Yuanzhang and Zhu Biao and his sons implement the New Deal, changing the direction of history and the fate of countless people.
