Hong Kong madam raked in HK$31.5 million profit during nine-year run operating prostitution ring out of Mid-Levels flat with help of domestic workers

• But Heidi Wong’s two helpers earned just HK$1,000 a month for their part in the scheme, which used fake images to lure customers
• Undercover police busted the ring after arranging a series of liaisons in 2018; sexual services were typically offered starting at HK$6,000