The grim scenario of people trying to escape from a building engulfed in flames may have been the ominous premise of the new Hong Kong 3-D movie Out Of Inferno but, off the set, actors Sean Lau Ching Wan, 49, and Louis Koo, 42, are anything but glum.
In the latest flick helmed by the Pang brothers, the seasoned actors play brothers - with Lau as chief firefighter and Koo as a former firefighter - at odds with each other over their beliefs when it comes to saving lives.
In town to promote the disaster thriller on Monday, the tanned duo showed off their deadpan humour and easy chemistry, cultivated after working on 12 films together.
In the film, Koo's character proposes to his girlfriend. Did that get you thinking about your own wedding proposal?
Koo: I haven't really had time to think about it, I'll think about it if the opportunity arises in the future.
Now, it seems to be the trend for couples to film their wedding proposal. When you see it, you feel quite touched.
A few hundred people could be milling around, then suddenly you realise they are part of a planned wedding proposal. I don't have time now.
Lau: Tell me (when you need help) and I'll arrange it for you.
You are both tanned. How is it like filming on set together?
Lau: When the two of us appear in the same frame, the lighting guys just have to shine more light.
But when a fairer actor, like Malaysian co-star Lee Sinje, is in the picture, the lighting guys have problems finding a balance.
Koo: My female co-stars look good when they appear in the same scene as me, because of all the light shining on us. The effect looks as if we are filming a (dreamy) music video.