Zi Collection, Upper Volume Radical: Water (shuǐ) Page 123, Entry 05 Recorded in "Tang Yun" (Tang Yun), "Ji Yun" (Ji Yun), and "Yun Hui" (Yun Hui) as pronounced yu ji (entering tone), homophonous with "yi". "Shuowen Jiezi" (Shuowen Jiezi) explains it as the Xu region of Linhuai Commandery. Also recorded in "Ji Yun" (Ji Yun) as pronounced yu qi (falling tone), homophonous with "yi". The meaning is the same.