Mianxin (綿忻; 9 March 1805 – 27 September 1828) was Qing dynasty imperial prince as the fourth son of the Jiaqing Emperor.
[3] In his childhood, Mianxin shared a close relationship with his elder brother, Miankai and Minning,[4] the future Daoguang Emperor who had been adopted by the empress in 1797.
Due to mismanagement of the printing house of the Hall of Martial Valor in the Forbidden City, Mianxin had his salary decreased, while his assistants received various forms of punishment.
[14] Mianxin died on 27 September 1828 of illness and was posthumously honoured as Prince Ruihuai of the First Rank (和硕瑞怀亲王, meaning "propitious and affectionate").
The princess consort died on 11 April 1827[16] and was interred at the family mausoleum located in Haidian District, near the Tomb of the Futian duke.