Two years ago, Andy Lau Tak-wah's bid to learn the Chinese art of 'face-changing' was almost foiled by mainland officials. The spoilsports argued the art form should be off-limits to 'outsiders', but later changed their minds and allowed him to join an opera school in Sichuan. Now, rumour has it the Canto-pop superstar (left) is to visit Sichuan's capital Chengdu in the next few weeks to learn the skill, although SAR was recently told the star is in Beijing shooting a film. When Lau returns to Hong Kong in two weeks to attend the premiere of another film, Infernal Affairs, SAR will ask for a comment. That's if Lau can still be recognised.