Mao Collection, Lower Volume Radical: Script (wén) 19 strokes Page 477, Entry 21 Correctness Guide (Zhengzitong): The same as the character meaning a dry measure of six hu and four dou (yǔ). Zhuangzi (Zhuangzi), Tian Zifang chapter: Do not allow measuring instruments such as the yu and the hu to enter the four borders. Note: Pronounced yu (rising tone). A measure of six hu and four dou is called a yu. In the version by Sima Biao, the character is pronounced zhong.