Momu (Chinese: 嫫母) is a Chinese goddess and was a legendary empress as the fourth wife of the Yellow Emperor.[1][2][3] According to tradition, she invented the mirror, in the 27th century BC.[4][5]
Momu is one of the "Five Ugliest Women of Ancient China" along with Zhongli Chun, Meng Guang, Huang Yudying and Lady Ruan.[6] Metaphorically juxtaposing Xi Shi and Momu as two rare extremes, Huainan Zi states that Xi Shi was pleasant to look at even without cosmetics, while Momu was horrible to look at even with them. The Yellow Emperor granted her the official position of "Fang Xiangshi" (方相氏) and used her appearance to drive away evil spirits.[7]