Here's a more clearer view.
As u can see the girls are just scattered on the street like food vendors..
They have there mamasans or pimps to do business for them.
At first u might be a little scared at approaching them but as It get longer and you get more hornier the more easy it is to choose.
Girls here are more inexperienced than there in bbs shops. As they don't do this for a living. Most of the girls there are real hardworking people.
So don't complain if the sex is no good or there's no blowjob.
Just do as bro sperminator said smile at them and maintain eye contact.
If they smile back then its on.