How do chinese mahjong parlors work?

I've seen mahjong parlors all over China .  It seems that every chinese know how to play mahjong game and enjoy playing mahjong game for winning money.But most player I meet tell me that he play mahjong for fun ,not money .It's impossible for a chinese not to play mahjong ,becauce all of your friends ,your family,your co-workers are mahjong player,and mahjong have became a sociale tool.  A chinese told me that chinese junge a man by mahjong game,
First, when you go to a mahjong parlors, do you go with your friends and get a table so you can play together, or is it like a casino/card room where you go to find a game with random people?Second.

 how do these mahjong parlors make money?  Do mahjong parlors operators charge per hour for your seat and try to sell you food and drinks or something else?  Do some of them take a cut of the bets as card rooms do?
the last question.  Gambling is illegal in china, yet mahjong parlors operate out in the open.  Obviously nobody plays mahjong just for fun any more than they would play poker.  So how do the players handle the exchange of money without attracting unwanted attention?
yes its like a casino and you play with random people,different tables have different stakes and yes they make money on hourly or daily collections ,fees depend on the stakes you play.yes you can play with your friends on the same table.
gambling is illegal in china ,and mahjong parlor operators could be punished severely.mahjong gamble player catched by police have to pay a fine  ,the fine depend on your bets. varys form 200 RMB to 5000 RMB

Tips on how to play free on line solitaire mahjong games:

Online Mahjong solitaire games is a kind of puzzle game based on a classic Chinese game for four persons. The goal is to match open pairs of identical tiles and remove them from the board