Wang Zhu Youjian, the Believer in Time Travel and Rebirth

The protagonist in the book, Lin Chen, worked in the northwest weapons factory of the great Eastern country in his previous life, specializing in the research and development of guns, cannons and explosive weapons. Unfortunately, he contracted a terminal illness, and his soul traveled through time and was reborn as Zhu Youjian, the king of the Ming Dynasty. When Tianqi died, Lin Chen succeeded to the throne. When he first came to Dabao, he had great ambitions, but the cruel reality hit him hard in the face. He was horrified to find that there was another evil spirit that had been practicing for two hundred years coexisting in Zhu Youjian's body. The evil soul's soul power was powerful and domineering, tightly imprisoning and suppressing Lin Chen's soul, and monopolizing the dominance of his body. This evil spirit is the life-killing evil star of the Ming Dynasty. The only purpose of seizing Zhu Youjian's body is to destroy the Ming Dynasty and massacre the descendants of the Zhu family. For seventeen years, the evil spirit controlled the body and acted recklessly, pushing the already weak Ming Dynasty step by step into the abyss of national subjugation. In the desperate situation, Lin Chen never gave up, and received the help of two generations of heavenly masters. Finally, in the seventeenth year of his rebirth, when Li Zicheng's army invaded Beijing, he seized the golden opportunity to expel the evil spirit from the body in one fell swoop and regain control of his body. He used a substitute to fake his death, hid it from Li Zicheng, escaped from Beijing, and went to Nanjing to rebuild the Ming Dynasty and the Southern Dynasty. He tried his best to reject criticism and took the initiative to reach a peace agreement with Li Zicheng and Zhang Xianzhong to stabilize the domestic situation. Relying on the knowledge of military industry in previous lives, they mass-produced new guns, cannons, and high explosives, and used state-of-the-art firearms to form a crushing dimension-reducing strike. They severely damaged the Qing army several times and defeated the elite Eight Banners army. He also launched the Northern Expedition to recover all the Ming Dynasty's homeland, completely annihilating the Manchu Qing regime and the Mongolian tribes in the steppe, erasing a century of national humiliation, and finally completing the true unification of China.