Hong Kong film: Undercover? With a monthly salary of 3,000, what kind of life am I living on?

Transmigrating into a parallel world of Hong Kong variety shows, Chen Piao becomes an undercover police officer. Being an undercover officer is bad enough, but to make matters worse, he's Huang Zhicheng's undercover agent. Three years after three years, after helping the police bring down the Ni family, Huang Zhicheng shamelessly refuses Chen Piao's application to return to the force. He even uses the excuse of maintaining order in Tsim Sha Tsui to send Chen Piao to continue his undercover work at the Luen Shing Foundation! They won't let him return, huh? Perfect, how much can a cop earn in a month? ...Years later, when the head of the Organized Crime and Triad Bureau (OCTB) finds Chen Piao with his files and demands his return, Chen Piao flicks a cigar in his face. "I hope you understand our roles. I am now the honorary chairman of the Hong Kong Island Chamber of Commerce, a Legislative Council member, and the money I donate to your police force every year is enough to support your entire OCTB! Even your top officer has to greet me as 'Mr. Chen'! Now you're using some so-called information to slander me as some kind of undercover agent? Stand at attention and speak!"