Derek Kwok and Nancy Wu were filming a scene for D.I.E II, a sequel to D.I.E. The scene they were filming revolves around news that Derek has contracted a teminal disease. It turns out, the hospital had mixed up patients data and Derek is actually not dying.
Derek was very sad when he heard that he was dying, and he has to film a crying scene. He was extremely professional and can cry without the aid of any eye drops. Derek produced natural tears. When Derek got news that he was in fact not dying, he was required to turn completely around and portray a 180 degree emotional change. It was a tough scene to film but Derek handled it well.Source: on.cc with translations by: jse @ AsianFanatics.net