She was a nameless concubine of the Yongzheng Harem, after entering the palace, she was favored by the Yongzheng Emperor and became a member of the Yongzheng Harem, she entered the palace for six years and died of incense, but left a fang name, which is relatively rare in the history of the Qing Dynasty, Qianlong finally gave her the exact name after succeeding to the throne: Yun Promised.

First, he was favored by the emperor but had no name and no points
Carefully reading the historical materials of the Qing Palace, everyone will find that the number of members of the Yongzheng Harem is not as small as people think, there are about thirty people, but among these thirty people, only eight are above the concubines, and most of the others are some nobles, constant presence, promise, and even gege.
However, what people did not expect was that there were three women in the Yongzheng Harem who did not have any names, namely Yun Hui, Lan Ying and Ji Guan.
What the hell are these three women? Due to the limited information, we cannot know, but according to their names in the harem, in fact, these are three palace women, Yun Hui is one of them, they are likely to be coated women from the Ministry of Internal Affairs, because of their outstanding appearance or certain skills, they were selected into the harem.
Moreover, these three palace ladies appeared in the harem almost at the same time, that is, in March of the third year of Yongzheng, the names of these three women appeared for the first time in the Qing Palace archives, and at that time, the concubines below the throne, in addition to these three people, there were also old nobles, Hai Changzai and Guo Changzai. The old nobleman, Hai Changzai and Guo Changzai at least have their own names, while Yun Hui and the other three women are nameless and undivided, but they are really Yongzheng's concubines.
In an archive in the seventh year of Yongzheng, it is clearly recorded that Yun Hui had an official woman waiting by her side, which shows that she is the emperor's woman, but why did Yongzheng not give her any name? Is it because Yun Hui was born too low, or because Yun Hui was only favored because of Yongzheng's whim? We don't know.
Second, after entering the palace for six years, the incense disappeared
In fact, the fact that Yun Hui and the other three palace girls were able to leave their names was also related to the fact that they had no name. Those concubines who were named as constant presence or promise, with their own names, could be called so-and-so and so-and-so, while Yun Hui and the other three people had no name and no points, and could only be recorded by name.
Historical records record that in the first month of the ninth year of Yongzheng, Yunhui was still in the list of Yongzheng concubines at that time, but there was no relevant record of her since then, which shows that Yunhui should have died in this year. According to The third year of Yongzheng, the age of Yun Hui who entered the court was thirteen years old, and she was only 20 years old when she died.
Although Yunhui died in the Yongzheng Dynasty as an anonymous person, qianlong posthumously honored him as Yun promised after succeeding to the throne, which would never appear in the Yongzheng Dynasty, generally speaking, the new emperor only posthumously sealed those concubines who gave birth to children for the former emperor, and women like Yunhui who had no children would not be posthumously, but Qianlong posthumously sealed Yunhui.
However, after Yun Hui's death, he was not buried in Yongzheng's Tailing Concubine Garden, but was buried in the Liugu Dao Cemetery, probably because Yun Hui's position was too low.
"In April of the ninth year of Yongzheng, Yun promised to die of illness and was also sent to the Liugu Road to be buried, without building the yamen wall. Now build three yamen and three gates, build the surrounding wall, and then build houses for caretakers and other people, three houses for the leaders of the cao Balitun guards and other examples, and two rooms for the guards and so on. ”
Film and television image: In some TV series, some concubines are shaped with Yunhui as the historical prototype, such as Marte Ruoxi in "Step by Step", such as Yun Concubine in "Palace Lock Bead Curtain", it is precisely because of the relevant records of Yunhui that we can see such a classic image.
References: Draft History of the Qing Dynasty, Records of Emperor Shizong of the Qing Dynasty, Records of the Upper Edicts