I, a doctor of law, became a county magistrate in the Ming Dynasty. At the beginning, the county encountered an unsolved case that had not been solved for a century, and the whole county was helpless. I introduced modern trace inspection and psychology in the classroom, which shocked the whole city. Later, I established the first police school in Ming Dynasty and wrote the "Criminal Investigation Manual". Until I was involved in a secret royal case and faced the embroidered spring knife of the governor of Dongchang, I showed the token on my waist: "Excuse me, I'm the founder of the Ming Dynasty police."
