Living in the Republic of China era, from undercover agent to immortality

Upon waking, Li Changfeng finds himself transported to the 27th year of the Republic of China, unintentionally awakening the most powerful intelligence system. With the system's help, he rises from a lowly agent in the 76th Division to a powerful figure, becoming a translator for the Mei Agency, Dai Li's prized student, and the feared leader of the Dragon King Legion, codenamed Poison Sting. Dai Li: I believe in Li Changfeng; he is the true faith of the Military Intelligence Bureau. Transportation Station Chief: I'd rather believe I'm an undercover agent than believe Li Changfeng would betray us. Military Police Captain: Li-san, now it's just you and me here; I suspect I'm a Military Intelligence Bureau mole. Li Changfeng: Colonel, stop guessing, I really am an undercover agent! ...........