Liu Xijun (? - 101 B.C.), a relative of the royal family of the Western Han Dynasty. Born in Pei County, Jiangsu Province, she was the daughter of Liu Jian, King of Jiangdu. In the second year of Yuan Shou (121 B.C.), his father committed suicide after failing to rebel. His mother was executed for complicity. Because she was young and was not implicated, she entered the palace to receive education. In the sixth year of Yuanfeng (105 B.C.), Emperor Wu of the Han Dynasty, in order to unite Wusun (now the upper reaches of the Yili River) to fight against the Xiongnu, granted her the title of Princess Xijun. She married the king of Wusun, Kunmo, and was called Princess Wusun. When Hunting Pride was old, according to the custom of Wusun, Princess Xijun continued to marry the new Wusun King Cen Zou Jun Xu Mi. After giving birth to her daughter, she died soon after due to post-natal disorder and difficult mood. Princess Xijun often wrote poems to express her homesickness. Her "Song of Sorrow" was passed down to Emperor Wu of the Han Dynasty. Emperor Wu of the Han Dynasty was moved by it and sent messengers to sympathize with her every other year with embroidered curtains. She was the first princess of the Han royal family to marry into Wusun and was also the first person to marry into the Western Regions in historical records. She had contributed to the good relations and stability of the Western Han Dynasty. When Princess Xijun married into Wusun, the king of Wusun, Hunting Pride, was over fifty years old. She was unable to speak the language and lived a sad life. After Hunting Pride died of illness, she did not want to marry the next Wusun King's army, Xu Mi, according to Wusun customs. She once wrote to Emperor Wu of the Han Dynasty to request to return to China, but because the Han Dynasty and Wusun's demand to jointly fight against the Xiongnu was not allowed, she could only accept her fate. She died less than five years after marrying Wusun. After her death, there was a white marble statue of her on the Xiate Ancient Road in Zhaosu County, Yili Kazakh Autonomous Prefecture. After her death, Emperor Wu of the Han Dynasty sent Princess Jie You to Wusun for a marriage alliance in order to continue the alliance against the Xiongnu. While waiting for the anime, you can also click on the link below to read the classic original work of The King's Avatar!

There was no more detailed information about Princess Xijun's daughter. It was only known that she was born after Princess Xijun married the new Wusun King Cen Zou. After giving birth to her daughter, Princess Xijun died not long after due to post-natal disorder. While waiting for the anime, you can also click on the link below to read the classic original work of The King's Avatar!
Because I'm not familiar with the plot of Princess Relieve Worry. It is recommended to check the specific plot of Princess Xijun's death in the TV series or the original work to better understand the development of the story.
I am unable to provide any information regarding the death of Princess Xijun in Princess Jieyou's TV series because this is a fictional TV series. The plot and character endings are all created by the screenwriter and director. The plot of a novel and a TV series was different. Some novels might describe the death of a character, but the specific details and methods might be different. If you want to know more about Princess Xijun, it is recommended to look at relevant historical documents or original works to obtain more accurate information.
I can't provide any information about Princess Jieyou killing Princess Xijun because this kind of plot doesn't conform to historical facts. Princess Xijun was a real person in history. She was killed in a conflict with Qing Dynasty officials in the early 20th century. TV dramas usually make up some plots to attract the audience's attention, but they don't conform to historical facts.
Lu Lingfeng and Pei Xijun were the main couple characters in the drama. Lu Lingfeng was a Lieutenant General of the Golden Guards. He was born into a prestigious family and was highly skilled in martial arts. His appearance was outstanding, and he was ambitious, but he was also conceited and arrogant. Pei Xijun was Pei Jian's daughter. She was beautiful, intelligent, and good at painting. The two of them had a good impression of each other when they first met in the play. As the plot developed, the emotional bond between them gradually established. Pei Xijun originally thought that Lu Lingfeng was her fiancé, but later found out that Lu Lingfeng was only meeting her cousin. Even so, Lu Lingfeng fell in love with Pei Xijun at first sight and played her fiancé in order to pursue her. Their relationship had gone through many twists and turns, but in the end, they were able to be together. In the second season, it was very likely that they would be engaged because there were not many obstacles in their relationship. Pei Xijun's father, Pei Jian, also recognized Lu Lingfeng and entrusted his daughter to him. Although Lu Lingfeng was the princess's son, their love would not be affected too much. In general, Lu Lingfeng and Pei Xijun were a couple in the " Tang Dynasty's Bizarre Records ". The love story between them was full of suspense and romance.
The Eldest Princess had different roles in different TV dramas. In the TV series " Nirvana in Fire ", the eldest princess was played by Zhang Yanyan. She was an actress from the mainland of China. She was born on November 15, 1978 and graduated from the Beijing Film Academy. In the TV series " The Legend of Lu Zhen," the eldest princess was played by Li Yixiao. She was a China actress, born on February 2, 1983, and graduated from the China Drama Academy. As for the actress who played the Eldest Princess in other TV series, there was no mention of her in the search results.
The Eldest Princess was played by Zhang Yanyan in the TV series " Nirvana in Fire ". Zhang Yanyan was an actress from the mainland of China. She was born on November 15, 1978 and graduated from the Beijing Film Academy. She played the role of Princess Liyang in the drama. In addition to Nirvana in Fire, Zhang Yanyan also acted in many other TV series and movies, such as The History of Wulin and The Moment of Death. Her acting skills were recognized by the audience and she won the Golden Phoenix Award of the 9th China Film and Performing Arts Society. Regarding Zhang Yanyan's personal information, her Chinese name was Zhang Yanyan. She was 166cm tall and was born in Beijing. Other detailed personal information is temporarily unavailable.
The Eldest Princess had different actors in different plays. In " Nirvana in Fire ", the Eldest Princess was played by Zhang Yanyan. She was an actress from the mainland of China. She was born on November 15, 1978 and graduated from the Beijing Film Academy. In " The Legend of Lu Zhen," the Eldest Princess was played by Li Yixiao. She was an actress from mainland China. She was born on February 2, 1983 and graduated from the Chinese National Drama Academy. In other plays, such as " Joy of Life " and " Song Palace Ci," the Eldest Princess was played by Li Xiaoran and Wu Mochou respectively. Therefore, the role of the Eldest Princess depended on the specific play.
There were many different actors in the profile of the eldest princess. The eldest princess was played by different actors in different plays. According to the search results, the Eldest Princess was played by Xu Fan, Li Xiaoran, Zhang Yanyan, and Zhang Yanyan. However, there was no detailed personal information about the person who played the role of the Eldest Princess.