9 Pinyin complex vowels
ai ei ui ao ou iu ie üe er
What is a complex vowel? Answer: A complex vowel is a vowel composed of two or three vowels.
What are the complex rhymes? Answer: 9 single finals: [ai] [ei] [ui] [ao] [ou] [iu] [ie] [üe] [er]
About finals [er]: It is composed of a consonant and a final. The consonant is in front of the initial and the final is not behind.