gǔ / qín / pǔ / zhōng / cháng / yòng / hé / sì / yǐ / chě / gōng / biǎo / shì / wǔ / shēng / yīn / jiē / de / yīn / míng

古琴谱中常用“合四乙尺工”表示五声音阶的音名。

Guqin scores often use “合四乙尺工” for the names of the notes in the pentatonic scale.