Pronounced yang zhu (falling tone) in Guangyun, and rong zhu (falling tone) in Jiyun, same pronunciation as "yu". Shuowen Jiezi explains: A ram in summer is called "yu". Erya, Shi Chu records: A ram is called "yu". The annotation states: referring to a black ram. Guicang records: Two pots of wine, two rams. Also, Jiyun explains: "Yu" has a beautiful meaning. Zuo Zhuan, Duke Xi Year 3 records: And the words of Yao say: usurping and changing, taking away the beauty of the duke. The annotation explains: Yu means beauty. Also, Shanhaijing records: "Yu" is a mountain spirit. Candlelight is used during sacrifices. Also, Jiyun is pronounced yu shu (falling tone), same pronunciation as "yu". The meaning is the same. Verification: [Erya, Shi Shou: male yu.] Respectfully, the original text changes "Shi Shou" to "Shi Chu".