1. There r just more eligible sugar daddies(and for sure way more busy too) in shanghai. This has created an unique market niche for many men who believe in scoring everynight. I'll leave the rest of the story for ur wild imagination.
2. there r also just more well-paid white collar OLs in shanghai that crave the excitement of one-night-stand. They usually have no imminent financial stress,but this irresistable desire of being irresistably desired.
So this case is closed.
Contrary to these girls' belief, it's almost next to impossible to find what these 2 groups of girls were looking for in 98. Sexual pleasure would usually not be maximized in the first encounter of the two; sex is the only thing to which 98 dudes would pay their attention (if luckily not money). To the girls, sex would be more like the last frame of "the night's movie at 98": a black screen saying "The End" before the credits come out(of course the credits would be very optional in the morning or even just later that night).
Enforcer Production: A lousy attempt to interpret some alleged pornographic post-98 incidents.