Source: TVB News WorldJackie Chan promoted the film CZ12 (Chinese Zodiac 12 / SUP YI SUN CHIU) in Beijing. Jackie Chan pointed out that he considered Gong Li and Michelle Yeoh (Yeung Chi King) for the "Dai Soh" character in the film, but in order to bring more surprise, he asked his retired film star wife Joan Lin (Lam Fung Giu) to guest star. At first she declined and said that she was not used to working on the set. Jackie Chan asked her again and promised to only shoot her back. She finally agreed. The last scene that was shot in the entire film was Lam Fung Giu's appearance. To accommodate her the original set in the Beijing studio was made again in Hong Kong. Everyone was ready before she was invited to appear, finally after more than half a day she appeared and only worked on 3 shots. She insisted on only displaying her back on camera, but finally Jackie Chan forced her to turn around.