Hokkien has one of the most diverse phoneme inventories among Chinese varieties, with more consonants than Standard Mandarin or Cantonese. Vowels are more-or-less similar to that of Standard Mandarin. Hokkien varieties retain many pronunciations that are no longer found in other Chinese varieties. These include the retention of the /t/ initial, which is now /tʂ/ (Pinyin 'zh') in Mandarin (e.g. 'bamboo' 竹 is tik, but zhú in Mandarin), having disappeared before the 6th century in other Chinese varieties.
How do Hokkien vowels compare to Standard Mandarin vowels?
similar