It's sayonara to 你懂我的愛 by Leon Lai (黎明) & Zhang Ziyi (章子怡). Don't get me wrong - I love this song, but I can't stand Zhang Ziyi's horrible singing!
Well, now I've got a much better version of this song (sung by Janice 衛蘭) , so it's bye bye to the torturous singing of Zhang Ziyi! Haha!!!