According to Baidu question bank, "Yin" is a genre of ancient poetry (), which means (). A: "Yin" is a genre (name) of ancient poetry, which means (singing, intonation).
Poems about objects are generally suitable for expressing mourning, sadness and thoughtful feelings. The original intention of name adjustment is to sing old things in the form of chanting. Singing is a way of singing. This kind of singing is long and noble. In Yuefu poems, there is a kind of songs named after songs, such as Chu Yinfei, Elegance, Wu Dongyin, Fu Liangyin and Baitou Yin.