There are few records of Yu Ji in the history books, and even her real name, race, birthplace, birth and death time, the time when she met Xiang Yu, and the final outcome of her acquaintance with Xiang Yu are not recorded.

Sima Qian, a great historian of the Western Han Dynasty, only recorded in Historical Records of Xiang Yu: "There is a danger of beauty and fame." Therefore, there were two kinds of arguments later: first, some people speculated that "Yu" was the name of beauty; Secondly, it is speculated that "Yu" is a beauty's surname, which is stated in Ci Yuan. And "concubine" is the name of later generations.

There is also a certain saying about the word "Ji", which has two meanings: first, "Ji" is her surname; Secondly, "Ji" is the laudatory name of ancient women. Yuji's concubine can be classified as the second meaning, that is, the laudatory name.

In a word, people can only know that Yuji's name is related to the word "Yu", but her real name has become a mystery.

Extended data:

Yu Ji, a beauty of Xiang Yu, the overlord of the Western Chu Dynasty during the Chu-Han War, was named Yu (when the surname Yu was mentioned). The year of birth and death, birthplace and ending were inconclusive. She had been with Xiang Yu all the time in the predicament of being besieged on all sides, and Xiang Yu wrote "Gaixia Song" for her.

When Xiang Yu sent troops, Yu Ji waited in front of the tent, just like a general wife waiting at home for her husband who went out to go home.

If Xiang Yu comes back from winning the battle, concubine naturally feels very happy and will dance to celebrate Xiang Yu. If Xiang Yu returns from failure and looks pale, concubine will not ask about the front line, but will try her best to relieve Xiang Yu's worries. She will also encourage Xiang Yu to say that failure is the mother of success, and even put on her combat boots and robes to go into battle with Xiang Yu.

According to legend, Yu Ji has a beautiful face, equal talent and beautiful dance, and is known as "Yu Mei Ren". Later generations assumed that her ending was to commit suicide in the Chu camp according to the Song of My Concubine and the Song of My Concubine, which is said to be written by Yu Ji, and thus a legend about "Farewell My Concubine" spread.

Baidu encyclopedia-Yu Ji