Andy Lau gives fans a wave shock

"Wah Chai, Wah Chai," shouted fans of popular local actor and singer Andy Lau Tak-wah when they quickly recognized him shooting for a movie in Prince Edward's Allied Plaza.

The movie Shock Wave 2, starring and produced by Lau, is still waiting to be released at Hong Kong cinemas.

However, behind-the-scenes videos and photos were released yesterday.

When shooting for a scene in the movie, Lau wore a black cap and gray hooded sweatshirt jacket.

Even in plain clothes, he was still recognized by many shop employees and customers at the plaza.

Passersby stopped shopping to watch him rehearsing the scene.

He took the initiative to greet some of them, giving spectators a surprise by waving and shaking hands with them.

One of the fans who stood outside the store requested a hug - which Lau declined with a smile and a "prayer" hand gesture.