Gu Man qie, according to "Tang Yun" (Tang Yun), and Gu Huan qie, according to "Ji Yun" (Ji Yun), pronounced the same as "Guan". "Yu Pian" (Yu Pian) explains it as the leg of trousers. "Bo Ya" (Bo Ya) says it is called "Ku", and its trouser leg part is called "Gao". Also, according to Gu Wan qie in "Guang Yun" (Guang Yun), pronounced the same as "Guan". It is an alternative name for trousers. Also, according to Ku Huan qie in "Lei Pian" (Lei Pian), pronounced the same as "Kuan". It means to gather or collect.