Since I don't know the exact 'old police story', it's hard to say. But usually, there would be the police officers themselves. Maybe a grizzled veteran cop who has seen it all and a young, eager - to - prove - himself rookie.
In many 'old police stories', there are often a lead detective who is the brains behind solving the cases. There could also be the chief of police who gives orders and manages the department. Sometimes, there are supporting characters like informants who help the police with valuable information. And don't forget the criminals themselves, as they are also important characters in the story as the ones being pursued by the police.
Well, it really depends on the specific 'old police story'. However, it's common to have a central police character, someone who is tenacious and dedicated to his job. There might be his partner, with whom he has a complex relationship. There could also be characters from the community, such as witnesses or victims, who play a role in the story. And of course, there may be the antagonists, the bad guys who are causing trouble in the town and are the focus of the police's efforts.
Chapter 715, "Childhood Shadow", is the clearest early answer because it turns Once Xiao Shixu's situation into a concrete plot event.
Chapter 732, "Sister Xiao Wan, I Don't Understand", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter gives readers a real answer by opening on Bai Lu, eavesdropping in the corner, marveled at Jiang Cheng's...
Chapter 558, "The Love-Struck, Flirty Wife Appears", is the clearest early answer because it turns Ai Xiaochun's situation into a concrete plot event. A useful checkpoint is the way the scene starts with These people's comments are just too unpleasant; where does the fish...
Chapter 8 is the strongest chapter-level answer because it starts from The resentment that had barely calmed among the crowd surged back two... and follows through on Other people with a handsome and charming appearance often try to conceal....
Chapter 706, "How Did a Good Person Turn Out Like This?", is the clearest early answer because it turns Shang Shaojing's situation into a concrete plot event.
Chapter 789, "Son Toad", is the clearest early answer because it turns Gu Yu's situation into a concrete plot event. The chapter gives readers a real answer by opening on Shang Shaojing had given her an envelope containing a piece of paper...
Chapter 904, "Welcome Young Master and Young Madam!", is the clearest early answer because it turns Yu Fei's situation into a concrete plot event. Early on, Jiang Bufan and Jiang Buchen immediately ran up in surprise..
Chapter 666, "It Really is His Mom!", is the clearest early answer because it turns Tai Fan's situation into a concrete plot event. The chapter turns that into something concrete by moving from The crowd was shocked as they turned their attention to the unknown,...
Chapter 756, "Birthday Banquet", is the clearest early answer because it turns Sister's situation into a concrete plot event. The chapter gives readers a real answer by opening on On the day of the birthday celebration, the Jiang Family got up early.
Chapter 608, "Congratulations to Team Q for a Successful Escape!", is the clearest early answer because it turns Captain Ji's situation into a concrete plot event. The chapter gives readers a real answer by opening on Ji Yanbai narrowed his eyes, still marveling at the audacity of this...