Chou Collection, Upper Volume
Radical: Mouth (kǒu)
咿
Kangxi stroke count: 9
Page 188, Entry 10
Pronounced yi
According to the Extensive Dictionary of Rhymes (Guangyun), the Collected Rhymes (Jiyun), the Dictionary of Rhymes (Yunhui), and the Correct Rhymes (Zhengyun), the sound is yi.
In the Jade Manual (Yupian), the phrase ooyi nuer describes the appearance of forcing oneself to speak or smile.
Verses of Chu (Chuci), Divination: Should I force a smile and act obsequious to flatter a woman?
Han Poetry Outer Commentary (Hanshi waizhuan): When the phoenix first takes flight, the surrounding sparrows all emit jeering sounds of ooyi.
According to the Collected Rhymes (Jiyun), it is sometimes written in a simplified variant form (yi).