After midnight at a building in central Shanghai massage that is a shopping mall by day, massage beijing a Japanese-language poster in the elevator invites men up to Big West Ocean club on the seventh floor.

Upon entering the club, beijing massage a string of saunas with tropical garden decor and corridors lined with private rooms, beijing escort the receptionist suggests a full-body massage for 680 yuan (about $85), more than 10 times the going price of foot massages shanghai and cosmetic services.

This top price buys "anything you want," massage beijing the receptionist says. Workers inside the private rooms say the price includes sex . About half the customers are Japanese, beijing massage and the rest are local Chinese or Westerners.

Big West Ocean is one of an uncalculated number of recently established massage in shanghai parlors geared toward Japanese people, about 40,000 of whom live in the city.

Although no one knows the number of massage shanghai parlors catering to Japanese, people familiar with Shanghai's nightlife unanimously say they exist.

Some tell stories about shanghai massage starting from the feet and working their way up, raising the price as they go. Some offer prices so high, from 500 yuan to 900 yuan, that customers can be sure they will get more than a back rub, which usually costs 50 yuan to 100 yuan.

Some send masseuses to customers' homes, ,beijing escort while others ask customers as soon as they arrive whether they want sex.

"You're not under any pressure, but it's generally a pretty frank question," said a Shanghai escort magazine editor who was asked once. "I was in a place the other day, and they asked me 'do you want the full service?'"

"A very high number (of massage parlors) do extras," he said.

Despite China's ban on prostitution and occasional crackdowns, in cities throughout the country entertainment venues from neighborhood karaoke bars to five-star hotels offer under-the-table services to male clients. But the Shanghai escort parlors stand out in the sex service scene because they target and live off a group of expatriates.

"You get a lot of married but single Japanese people massage in Shanghai," said a foreign-born lawyer who has lived in Shanghai seven years.

"More than in any other city in China you find that (prostitution) is more targeted toward Japanese people," he said.

Shanghai's massage scene attracts Japanese expatriates because the prices are lower than those in Japan and the service is just as professional, a staff member of the local Japan External Trade Organization said.