Enthusiasts take notes...
I found a interesting spot, bit far from city center, but could worth a visit for educational purpose
or somehow a blast from the past, minus the pink neon lights.
One block way from a North Jiading Shanghai city limit, a street both side but more on the red highlighted part in map picture, with either a Massage place, a "spa", or BBS every litteraly 50-100 meters. Pretty obvious special service are offered there.
Seems they popping up there, highlight in blue a recently opened sauna.
Those BBS, on mid-day had about 5-6 girls each, had quick glance but it look like girls were between 25-35 yo .
That was a first approach, I pass this street time to time, by car, already saw some massage signs before, walking down these street is how you can see the BBS and the many "spas".
Will try to get more info another time I will pass through, and walk further, more pics and more importantly try to find a good excuse to innocently try something there.