"Eldest Sister" is the name given to your wife.
Mostly seen in Yuan dramas.
Yuan Zaju is also called Northern Zaju. It was formed in the late Song Dynasty and flourished during the Dade period of the Yuan Dynasty (the second half of the 13th century to the 14th century). The main representative writers include Guan Hanqing, Wang Shipu, Ma Zhiyuan, Bai Pu, etc. His main representative works include "The Injustice of Dou E", "Autumn in the Han Palace", "The Romance of the West Chamber", etc. Its content mainly exposes the darkness of society and reflects the suffering of the people. It combines realism and romanticism, with a clear main line and distinctive characters. The most notable features of its structure are the four-fold wedge and "one person singing the lead".