(2) vowels, ai[ Ai], ei[A], ui[ Wei], ao[ Ao], ou[ Ou], iu[ You], ie[ Ye], üe[ about ]er[ Er].
(3) Pronasal vowels, an[ an], en[ en], in[ cause], un[ temperature], ün[ halo].
(4) After nasal vowels, ang[ Ang], eng[ Qi], ing[eng], ong[ Boom].
Extended data:
(1) Vowel refers to China's Chinese phonology term, which refers to the parts of Chinese phonology except initials and tones. Formerly known as rhyme Vowels consist of three parts: the beginning (middle tone), the belly (main vowel) and the end. According to vowel structure, it can be divided into single vowel, compound vowel and nasal vowel.
(2) Consonants used before vowels, together with vowels, form a complete syllable. Other Chinese and Tibetan languages have similar structures. It is usually played with consonants, that is, the first consonant.