Back in the '90s, Hong Kong cinema worked at such a breakneck pace that films would go from pre-production to cinemas in a matter of weeks. That explains how actor Anthony Wong Chau-sang was able to star in 12 films in 1996. Well, One Dollar Production's Sex and Zen: Extreme Ecstasy - which is billed as the world's first '3-D sex movie' - is a throwback to the '90s in every sense. Shooting of the film - which was announced in late August - began in September and wrapped up earlier this month. It was snapped up at the American Film Market in Los Angeles. Producer Stephen Shiu Jnr, along with scantily-clad star Vonnie Lui Hoi-yan (left), made an appearance at the AFM to sell the film. Distribution rights to the HK$20 million production were sold to Australia, New Zealand, South Korea, Italy, France, Peru and even Singapore. 'I can't believe how popular our booth was at the AFM,' Lui said. According to Polly Chan, who handles promotion for the film, there will be more than a dozen different cuts, each tailored for a specific country's censorship regimes. 'Obviously, the Singapore version will contain the most cuts,' she said. Set for release in Hong Kong next May, Sex and Zen: Extreme Ecstasy is a loose adaptation of the 17th-century Chinese erotic novel, The Carnal Prayer Mat.