Film and TV Crossover: Starting at Kowloon Walled City

[Power fantasy + transmigrate + Young and Dangerous + Hong Kong films + period setting] Also known as A Lucky Viewer Chosen at Random in a Multiverse of Films and TV You're a gangster heiress in Twilight of the Warriors: Walled In; You stir up trouble in the capital of Zhaoge in Creation of the Gods; You're the heroine's daughter in Love in a Fallen City; You spend a day hanging out with a crime boss in Infernal Affairs; You become family with the heroine in Lust, Caution; You stare at the male lead's face in Dog Bite Dog; (The original idea was a self-insert romance, but I'm not sure what it'll turn into on the page. I'll start with old Hong Kong movies. Feel free to recommend Hong Kong films with good plots and handsome leads. I might write one if I like it, but I can't promise the characters won't be out of character...)