The film brought in HK$2.78 million ($360,000) on its opening day last Thursday, eclipsing the previous first-day record set by James Cameron’s 2009 3-D sci-fi epic “Avatar,” which earned HK$2.63 million ($340,000) on its first day…

“Sex and Zen” bills itself as the world’s first 3-D erotic film, although Shiu acknowledges that a South Korean production — last year’s “Natali” — hit the market before his release did. However, Shiu’s movie is still a pioneering attempt at using new 3-D technology in theatrical releases of erotic films, given that the market in the West is now largely dominated by DVD releases.