This wooden Nuo mask is the mask of Mu Guiying, one of the few female military officials in Chinese history.  As a female character in Nuo drama, the mask has been given feminine touches such as the long eyelashes, red facial makeup, and the two phoenixes on the headdress instead of two dragons. 

Because Mu gave birth during one of her famous victories in Guizhou province, couples hoping to conceive stage the opera performance in front of their house to pray for offspring. During the performance, the actress "gives birth" to a wooden baby, which is then handed to the hopeful mother. Later on, Mu became a fertility symbol for women who want to have children to worship.