Yizhi was born to secondary princess consort Ruihuai, lady Xu, as Yiyue (奕约).
[3] Yizhi died on 27 June 1850, having been barely 22 years old and was posthumously honoured as Prince Ruimin of the Second Rank (多罗瑞敏郡王, meaning "propitious and clever").
After Zaiyi was stripped of his title for his ferocious actions towards foreigners during Boxer Rebellion,[7] Zaixun, a son of Yixuan, Prince Chun of the First Rank, was adopted as another successor of Yizhi.
[8] Zaixun was granted a status of prince of the second rank because of the decree proclaiming expiry of Yizhi's title.
[9] Yizhi was married to lady Feimo, a daughter of fourth rank literary official Wenwei (文蔚)[10] since 1840.