I remember that Ouyang Zhenhua starred in a TV series called "Anti-Pornography Pioneer", which had a plot similar to what the original poster said. There was a modeling agency that specialized in training models and then selling them into prostitution. It was later uncovered by the police. I don’t know if this is what the poster is looking for

Plot introduction

"Anti-Pornography Pioneers" tells the story that after 1997, the Hong Kong police stepped up their anti-pornography efforts and resolutely banned all types of illegal pornographic trading activities. , strive to return Hong Kong to a pure land. Inspector Jiang of the anti-pornography team led a group of "anti-pornography pioneers" to attack everywhere, rescuing third-level porn stars, smashing the sex trade, arresting romantic high-rollers, and protecting decent women... He spared no effort to maintain the image of Hong Kong. The play involves almost all typical cases that may be encountered in the anti-pornography process, and also exposes the underworld behind these cases.