su su Zhangzhou , Tainan si si Spoken mutual intelligibility Quanzhou speech, Xiamen (Amoy) speech, Zhangzhou speech and Taiwanese are mutually intelligible . Chaozhou ( Teochew ) speech and Amoy speech are 84.3% phonetically similar and 33.8% lexically similar, whereas Mandarin and Amoy Min Nan are 62% phonetically similar and 15.1%