amoy dialect aspiration barnett-chao bopomofo cantonese chinese postal map romanization chinese language romanisation in singapore comparison of chinese romanization systems cyrillization of chinese from pinyin diacritic foochow romanized fuzhou dialect general chinese guangdong romanization gwoyeu romatzyh hakka chinese hong kong government cantonese romanisation joseph needham jyutping latinxua sin wenz legge romanization linguistics mandarin chinese mandarin phonetic symbols ii meyer-wempe min dong min nan pinyin romanization romanization of chinese romanization of chinese in the republic of china sidney lau romanisation spelling in gwoyeu romatzyh standard cantonese pinyin standard mandarin taiwanese teochew dialect tongyong pinyin wade-giles wu chinese