The explanation of Qu is as follows

1. Qu (Pinyin: qū, qǔ) is a first-level standard Chinese character (commonly used character). This character first appeared in oracle bone inscriptions and bronze inscriptions of the Shang Dynasty. The ancient character is shaped like a curved ruler, and one theory is that it resembles some kind of silkworm-raising equipment. The basic meaning of qu is curved, which is opposite to "straight". Read qū. It also extends to mean being unreasonable and dishonest. "Qu" is also used as a noun, referring to a curved place. By extension it means partial or incomplete. "Qu" often refers to the winding and secluded places in the countryside. The sound of music can be high or low. Songs and music have an extended meaning of twists and turns. This meaning is pronounced qǔ. "Qu" is also the simplified character of "qu". "Qu (qū)" refers to a lump that can cause fermentation and is used to make wine or sauce. It is simplified and written as "qu"?

2. Regarding the instrument that "qu" simulates, one explanation is that it is a curved ruler, and the lines on the bronze inscriptions represent the scale. The curved ruler is curved, so "qu" means bending. Another explanation is the equipment for raising silkworms. "Shuowen" explains it this way: "Qu, like the shape of a vessel bent to receive objects. Or, qu, silkworms are thin." The "thin" here refers to silkworm curtains, which are tools for raising silkworms, like mats or sieves. Made of reed and bamboo, this meaning was later written as "foil". Xu Shen's explanation has two meanings: first, it simulates the shape of the object, but the specific object is not revealed; second, it is silkworm thin, that is, silkworm foil, a silkworm raising device made of reed or bamboo. In fact, silkworm foil, a sericulture utensil made of reed or bamboo, is itself one of the curved utensils.

3. "Qu" can be used as a verb, which means "to bend", such as "Sparse food and drink, bend your arms and pillow, and you will enjoy it." Used as a noun, it means "a crooked place". For example, in Li Bai's "Xiyu Chun Fu" of the Tang Dynasty: "The song of the Han Dynasty comes to the lake of the river." From "a crooked place", it is easy to think of remoteness, so "qu" also means "a crooked place". By extension, it refers to "remote place" and "corner". For example, "Zhuangzi · Tianxia": "Although, one should not not compile it, a scholar is also a tune." Cheng Xuanyingshu: "A remote scholar." After the Han Dynasty, people called the remote branch alleys from residences to alleys " song". For example, in Jiang Fang's "Biography of Huo Xiaoyu" in the Tang Dynasty: "I lived in the ancient temple Qu in Shengyefang." People also called brothels "Qu", probably because brothels were mostly located in the alleys of Lifang. For example, in Pu Songling's "Liao Zhai Zhiyi·Lin" in the Qing Dynasty: "Xian didn't think it was ugly, and he loved it more than usual. He wandered through the alleys and disappeared from now on."