Pronounced gu-lang (falling tone) in the "Tang Yun" (Tang Yun), and ju-lang (falling tone) in the "Ji Yun" (Ji Yun), "Yun Hui" (Yun Hui), and "Zheng Yun" (Zheng Yun), with the same pronunciation as "gang". "Shuowen Jiezi" (Shuowen Jiezi) explains it as a boundary. Another explanation is a path between fields. In the Zhao and Wei regions, paths between fields are called "gang". Also pronounced ge-lang (falling tone) in the "Guang Yun" (Guang Yun), ju-lang (falling tone) in the "Ji Yun" (Ji Yun) and "Yun Hui" (Yun Hui), and ju-ang (falling tone) in the "Zheng Yun" (Zheng Yun), with the same pronunciation as "ang". The "Guang Yun" (Guang Yun) has the same definition. It refers to a salt-producing marsh. Also pronounced ju-lang (falling tone) in the "Ji Yun" (Ji Yun), with the same pronunciation as the falling tone of "gang". It also means boundary.