Yu Gong
Liang (sometimes as , "Liángzhōu") was one of the Nine Provinces of ancient China originally recorded in the "Yu Gong" or "Tribute of Yu" section of the "Book of Documents". By the time of the "Erya", it had been replaced among the list of the nine major provinces of China. Nevertheless, it was usually included among the lists of the Twelve Provinces in the reigns of the mythological figures of Emperor Yao and Emperor Shun. It included the upper Han River basin west of the Huaxia homeland.