Is a nasal final. When pronounce the first final, you should round your lips, and then it glides quickly to the second vowel.

是鼻韵母。在发第一个元音时，首先要圆唇，然后，很快滑向后一个音节。

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Following the "initial" is the "final", which can be classified into three types: the simple final, compound final and final with a nasal ending.

声母后面的部分是韵母，又分为单韵母、复韵母和鼻韵母三类。

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