[Spy war + crime solving + detective + reasoning + counter-espionage + anti-Japanese + no heroine + iron blood]
Su Hao starts as a detective and is reborn in 1936. The good news is that his uncle is a detective. The bad news is that it's a life and death situation at the beginning, right?
But there is another piece of good news. There is a hook to retrace the scene. Relying on the time retrieval ability and the criminal investigation experience in his previous life, Su Hao gradually became a plainclothes detective from a young policeman, and even became the most famous detective in the French Concession.
But... You said that I have outstanding abilities, so why should I secretly join the Military Intelligence Agency and serve the party and the country? No! It's wrong for me to say that I'm good at solving crimes!