https://en.wikipedia.org/wiki/Chu_Suanzi

Chu Suanzi (Empress Kangxian)

Chu Suanzi (Chinese: 褚蒜子; 324–384), formally Empress Kangxian (康獻皇后, literally “the joyful and wise empress”), at times as Empress Dowager Chongde (崇德太后), was an empress of Jin Dynasty (265-420). Her husband was Emperor Kang, and, outliving him by 40 years, she was an empress dowager during the reigns of five emperors, including serving as regents for three of them: her son Emperor Mu (344-357), her nephew Emperor Ai (364-366), and her cousin Emperor Xiaowu (373-376). Despite the power she held, she appeared to largely yield to the judgement of high-level officials who advised her and rarely made decisions on her own.