The Spy War Begins with a 40-Year-Old Traitor

I, Jia Zhengjing, am a top student in the Department of History, minoring in Japanese for three years. I passed Level 4 directly. I am familiar with the history of the Anti-Japanese War. Even if I am not rich in the future, I will still be an expert and scholar. But the system, please explain to me, what, stepping on a horse, is called a horse-stepping start of Heavenly Collapse! ! I'm only twenty years old, and I haven't released my vitality yet. If you ask me to time travel into a forty-year-old man, that's fine. The key point is that this man is a traitor for riding a horse! ! You are now counting down my life! Damn it, my newly married wife is a spy, so I only have one hour left to survive? ! ! !