When her grandfather warned her not to use her left hand, the director was shocked. Now she’s made an acclaimed film taking aim at this Taiwanese superstition When her grandfather warned her not to use her left hand, the director was shocked. Now she’s made an acclaimed film taking aim at this Taiwanese superstition T he teenage Shih-Ching Tsou was at home in Taipei cooking a meal one day when she picked up a knife with her left hand. “My grandfather told me the left hand is the devil’s hand.