The languages spoken by the Taiwanese group is Taiwanese and Mandarin. The language spoken by the others is Cantonese. Although Chow Yun-fat and Chingmy Yau's characters both speak Taiwanese and Mandarin (and in real-life), they refuse to speak to Wu Hsing-kuo's character using those languages (usually the most appropriate thing to do) since both sides were enemies. Therefore, they only spoke to him in Cantonese.