The A.V. Clubs Says: Hong Kong audiences (and a few censor-evading visitors from the mainland) have turned the Chinese film 3-D Sex And Zen: Extreme Ecstasy—a stereoscopic porn that follows “a young man as he befriends a duke and enters a world of royal orgies and other sexual peccadilloes” in your face —into a box-office smash, grossing 2.78 million Hong Kong dollars on its opening day last week.