Guan Hanqing
關漢卿
aka Yizhaisou (已齋叟)
CountryChina
LanguagesClassical Vernacular Chinese
Datesc. 1241 — 1320

Guan Hanqing, art names Yizhai and Yizhaisou (已齋叟), was a Chinese dramatist, playwright, and poet of the Yuan dynasty. He has been described as among the most prolific and highly regarded dramatists of the Yuan period.— Wikipedia
yuan dynasty