Fan Xian died in Northern Qi.

The search results did not provide a clear answer as to why the Northern Qi Emperor, Zhan Doudou, had chosen Fan Xian as his partner. In " Celebrating Years," Fan Xian established a connection with the Northern Qi Emperor, Zhan Doudou, and the Northern Qi princess, Haitang Duoduo, through a series of actions and exchanges. Fan Xian had initially gone to Northern Qi to save Yan Bingyun, who had been betrayed by the Eldest Princess. He had also helped resolve some problems while in Northern Qi. Fan Xian's identity and status allowed him to protect Zhan Doudou's true identity while he was in Northern Qi. The specific reason why Fan Xian and the Northern Qi Emperor had come together might gradually be revealed as the plot developed.

Fan Xian was in Northern Qi for many reasons. First of all, Fan Xian's decision to send Fan Sizhe and Fan Ruoruo to Northern Qi was to temporarily hide from the limelight. In reality, Fan Sizhe had not been able to return to his homeland in Jingdou for many years. Fan Xian's connections in Northern Qi were good. He had even recognized Haitang Duoduo as his " sister-in-law." This gave him a backer and more friends in Northern Qi. In addition, Fan Xian himself liked to do business. He planned to take charge of the palace treasury after Fan Xian's wedding, so Northern Qi's business activities were very important to him. Fan Xian also realized that he was not alone in Northern Qi. He received the love and care of Fei Jie, Fan Jian, Chen Pingping, and others. Although they were not blood relatives, their love and care for Fan Xian was meticulous. In short, Fan Xian was in Northern Qi to find his value in life, to obtain freedom and warmth, and to display his ability and determination.

Fan Xian had sent Fan Sizhe and Fan Ruoruo to Northern Qi after weighing the pros and cons. Fan Xian had hoped to temporarily avoid the limelight, but he hadn't expected Fan Sizhe to not be able to return to Jingdou for many years. Fan Xian's relationship with his family was not close in his previous life, but after transmigrating, he realized that he was not alone. There were many people who gave him love and care. The Northern Qi Emperor and Fan Xian came together because they had common interests and emotional entanglements. Fan Xian's operation in Northern Qi was to rope Duoduo in and prevent her from confronting the diplomatic mission. Fan Xian saw the Northern Qi Emperor kneel because he represented the Qing Kingdom as an envoy. According to the principle of diplomatic equality, if he did not kneel, the Northern Qi envoy could not kneel before the Qing Emperor. As for the reason Fan Xian and the Northern Qi Emperor cooperated in smuggling, the television version did not go into depth. However, in the original work, smuggling was very important to Fan Xian. After Fan Xian returned to the diplomatic mission, he used Northern Qi's Eldest Princess to say that he was Sigu Jian in order to return to the diplomatic mission reasonably. Fan Xian did not see Lin Wan 'er after he returned because of the marriage between the Northern Qi Princess and the Qing Prince. As for why Fan Xian had Fan Sizhe and Guo Baokun go to Northern Qi, it was probably to tell the Northern Qi people that the spies of the Qing Kingdom were no longer a threat and to protect the spies hidden in the dark.

Fan Xian's decision to go to Northern Qi was based on many considerations. First, Fan Xian wanted to protect Fan Sizhe and Fan Ruoruo. Sending them to Northern Qi was to temporarily hide from the limelight. Fan Xian deeply understood the importance of family. They gave him warmth and love. Fan Xian had also completed one of the four tasks Chen Pingping had given him, ensuring that Yan Bingyun returned safely and took over the First Bureau. In addition, Fan Xian had a special relationship with the Northern Qi Emperor, Zhan Doudou. She was Fan Xian's lover, and the Northern Qi wangfei, Si Lili, was Fan Xian's lover. Fan Xian's identity in Northern Qi was relatively safe. He could bring benefits to Northern Qi. Furthermore, Fan Xian's existence was controllable for Zhan Doudou. In short, Fan Xian went to Northern Qi to protect his family, complete his mission, protect his personal interests, and maintain his relationship with Zhan Doudou.

There were several reasons why Fan Xian and the Northern Qi Emperor had come together. First of all, Fan Xian and the Northern Qi Emperor Zhan Doudou were in a cooperative relationship. Both sides had obtained what each other needed. Secondly, the relationship between Haitang Duoduo and Si Lili, as well as Fan Ruoruo becoming Ku He's disciple, made Fan Xian's relationship with Northern Qi even closer. In addition, the Northern Qi Emperor, Zhan Doudou, was a woman. He had physical contact with Fan Xian, so Fan Xian naturally had to consider his woman. In the end, Northern Qi poured a great deal of energy and support into Fan Xian. In short, the relationship between Fan Xian and Northern Qi was based on cooperation, mutual benefit, and affection.

Fan Xian went to Northern Qi because of many considerations. First, Fan Xian wanted to protect Fan Sizhe and Fan Ruoruo. Sending them to Northern Qi was to temporarily hide from the limelight. Fan Xian deeply understood the importance of family. They gave him warmth and love. In addition, Fan Xian had completed one of the tasks Chen Pingping had given him in Northern Qi, ensuring Yan Bingyun's stability. Fan Xian met many people in Northern Qi, including the Northern Qi Emperor, Zhan Doudou, and the Northern Qi Princess. They became Fan Xian's friends and lovers. Fan Xian's experience in Northern Qi had also allowed him to obtain wealth and status. In short, Fan Xian went to Northern Qi to protect his family, complete his mission, make friends, and pursue his own interests.

There were many reasons why the Northern Qi Emperor, Zhan Doudou, had chosen Fan Xian. First, as an official of the Qing Kingdom, Fan Xian had left a deep impression on Zhan Doudou after meeting the Northern Qi Emperor. The Emperor had even invited Fan Xian to tour the Royal Palace to observe this mysterious man who had inherited his mother's peerless beauty up close. Fan Xian's noble bloodline, outstanding talent, and outstanding character made him the perfect candidate for a husband in Zhan Doudou's eyes. Secondly, there was a cooperative relationship between Fan Xian and the Northern Qi Emperor. Fan Xian was doing business in Northern Qi to make a living, and Northern Qi had given him great support and energy. Both sides took what they needed and established a close relationship. In addition, Fan Xian's relationship with the Northern Qi Emperor also involved Haitang Duoduo and Si Lili. Haitang Duoduo was Fan Xian's confidant, and Si Lili was the Northern Qi wangfei. The relationship between these people made Fan Xian and the Northern Qi Emperor even closer. Lastly, the Northern Qi Emperor, Zhan Doudou, was a woman and had intimate relations with Fan Xian. Fan Xian had to think for his woman and plan for her to protect her interests and safety. This was also one of the reasons why they were so close. In short, the relationship between the Northern Qi Emperor and Fan Xian was the result of many factors, including mutual acquisition of needs, cooperative relationships, interpersonal relationships, and personal feelings. The connection between them was complicated and eye-catching.

Fan Xian and the Northern Qi empress Zhan Doudou had a complicated relationship in the novel " Celebrating Years." At first, Fan Xian thought he had spent the night with the Northern Qi wangfei, Si Lili, but in reality, he had slept with the Northern Qi empress. Later, when Fan Xian met Zhan Doudou again, he already knew the fact that she was a woman. Their old feelings were rekindled. They eventually gave birth to a daughter. However, the search results did not provide any detailed information regarding the specific plot and development of Fan Xian and the Northern Qi empress in the original work. Therefore, regarding the plot and development of Fan Xian and the Northern Qi empress in the original work, I am unable to give a definite answer.

Fan Xian and the Northern Qi empress, Zhan Doudou, had a complicated relationship in the TV series " Celebrating Years." At first, Fan Xian thought he had spent the night with the Northern Qi wangfei, Si Lili. In reality, he had slept with the Northern Qi empress, Zhan Doudou. Later, when Fan Xian met Zhan Doudou again, he already knew the fact that she was a woman. Their old feelings were rekindled. In the end, they gave birth to a daughter named Red Bean Rice. Fan Xian and the Northern Qi empress had a close relationship. They obtained what they needed from each other. Zhan Doudou also gave Fan Xian great support. Fan Xian was able to gain a firm foothold in the court and open up a situation in Jiangnan. All of this could not be separated from Zhan Doudou's help. The emotional development between Fan Xian and the Northern Qi empress had an important dramatic and plot development in the play. However, there was no clear answer in the search results as to why Fan Xian had chosen the Northern Qi empress to fight Doudou.

The relationship between the Northern Qi Princess and Fan Xian could be described as a partnership. The Great Princess was the Northern Qi empress's sister. In order to maintain the relationship between the two countries, she was arranged to follow Fan Xian to Jingdou to marry the Great Prince. In the movie, they established a trusting and cooperative relationship and helped each other through many difficulties.