Pinyin Lessons Study Material GoodChinese
[ai] is compound final. The former vowel is more open, longer and louder while the latter one is narrow, short, weak and blurred. It is imperative to havea natural glide but not a sudden change from the former to the latter.
[ei] is compound final. The former vowel is more open, longer and louder while the latter one is narrow, short, weak and blurred. It is imperative to havea natural glide but not a sudden change from the former to the latter.
[ui] is compound final. The former vowel is more open, longer and louder while the latter one is narrow, short, weak and blurred. It is imperative to havea natural glide but not a sudden change from the former to the latter.