The xiapei, based on the embroidered stoles worn by women of the Ming court, was worn by the wives of Han Chinese, who applied their husband's rank to the front and back. In this case, the badges display the egret, indicating that the wearer was the wife of a sixth rank official.
A similar xiapei in the collection of the author is illustrated by V.M. Garrett, Chinese Clothing: An Illustrated Guide, New York, 1994, pl. 38.