| Yongcheng | |
| Prince Lü of the First Rank 和碩履親王 | |
| Succession: | Head of the House of Prince Lü peerage |
| Reign: | 1763–1777 |
| Reign-Type: | Tenure |
| Predecessor: | Yuntao |
| Successor: | Mianhui |
| Birth Date: | 21 February 1739 |
| Birth Place: | Bitong Academy, Old Summer Palace, Beijing |
| Posthumous Name: | Prince Lüduan of the First Rank (履端親王) |
| Spouse: | Lady Niohuru |
| Spouse-Type: | First primary consort |
| Father: | Qianlong Emperor |
| Mother: | Imperial Noble Consort Shujia |
| Spouse1: | Lady Irgen Gioro |
Yongcheng (21 February 1739 - 5 April 1777) was an imperial prince of Qing Dynasty.
Yongcheng was born on 21 February 1739 as the Qianlong Emperor's fourth son. His mother, Imperial Noble Consort Shujia, was entitled "Concubine Jia" at that time.[1] In 1763, Qianlong Emperor decided to adopt him into Prince Lü peerage as a grandson of Yuntao, Kangxi Emperor's 12th son because all the children of the prince Lüyi died prematurely. Yongcheng held the title Prince Lü of the Second Rank until his death on 5 April 1777. He was posthumously honoured as Prince Lü Duan of the First Rank (履端親王; meaning "implementing in a dignified way") in 1799. [2]
Primary Consort
Secondary Consort
Concubine