Lin Yu traveled to the Ming Dynasty in the fifteenth year of Hongwu, which coincided with Zhu Xiongying's funeral and activated the "Ming Dynasty Revitalization System." He rescued Eunuch Zhang and gained Zhu Biao's trust, investigated the cause of death of Chang and Zhu Xiongying, found clues about the missing palace maid Xiao Cui and obtained clues to the poisonous cake. After encountering obstacles, he relied on agricultural reform to gain a foothold, summoned Li Shizhen to solve the "pulling machine", and Qi Jiguang to defend the Northern Yuan Dynasty. He opened the coffin and performed an autopsy to reveal Lu's crimes.
