The reason for Fan Xian's transmigration in " Joy of Life " was not clearly explained. According to the information provided, Fan Xian was a paralyzed patient in bed at the beginning of the 21st century. When he died, he transmigrated into the body of Ye Qingmei's newborn son and retained his memories. Ye Qingmei's transmigration was not fully explained. They only knew that she escaped from the Temple at the age of four and kidnapped the Temple Envoy Wu Zhu and some research results that could improve the human realm. Therefore, Fan Xian's transmigration was a mysterious matter. The exact reason was unclear.

Fan Xian had not transmigrated to become Fan Ruoruo. Fan Ruoruo was Fan Xian's sister. The two were not related by blood. In " Celebrating Years," Fan Ruoruo finally married King Jing's son, Li Hongcheng, and lived a happy life. Fan Xian saw her as his sister and had no romantic feelings for her. Therefore, Fan Xian did not transmigrate into the role of Fan Ruoruo.
Joy of Life didn't mention Fan Xian transmigrating into Fan Ruoruo. Fan Ruoruo was Fan Xian's sister. The two were not related by blood. Fan Ruoruo was an intelligent girl in the play. She was influenced by Fan Xian and had the education and awareness of a modern woman. She yearned for freedom and travel around the world. In the end, she chose an independent lifestyle and became a doctor. Her ending was to travel the world to save people and eventually marry the son of King Jing, Li Hongcheng. Fan Xian saw her as his sister and had no romantic feelings for her. Thus, there was no mention of Fan Xian transmigrating into Fan Ruoruo.
Joy of Life didn't mention Fan Xian transmigrating into Fan Ruoruo. Fan Ruoruo was Fan Xian's sister. The two were not related by blood. Fan Ruoruo was an intelligent girl in the play. She was influenced by Fan Xian and had the education and awareness of a modern woman. She yearned for freedom and travel around the world. In the end, she chose an independent lifestyle and became a doctor. Her ending was to travel the world to save people and eventually marry the son of King Jing, Li Hongcheng. Fan Xian saw her as his sister and had no romantic feelings for her. Thus, there was no mention of Fan Xian transmigrating into Fan Ruoruo.
Fan Ruoruo became Fan Xian's sister in Joy of Life. She was Fan Jian's daughter and Fan Xian's sister. Although Fan Ruoruo had always liked Fan Xian, Fan Xian treated her as his own sister and had no feelings for her. In the end, Fan Ruoruo chose to marry King Jing's son, Li Hongcheng, and became King Jing's consort. Thus, Fan Ruoruo became Fan Xian's sister in the story.
Fan Ruoruo became Fan Xian's sister in Joy of Life. She was Fan Jian's daughter and Fan Xian's sister. Although Fan Ruoruo had always liked Fan Xian, Fan Xian treated her as his own sister and had no feelings for her. In the end, Fan Ruoruo chose to marry King Jing's son, Li Hongcheng, and became King Jing's consort. Thus, Fan Ruoruo became Fan Xian's sister in the story.
Fan Xian had traveled to the future in Joy of Life. The background of the story took place after human technology had developed to a certain stage. Internal conflicts led to a world-class war, which eventually led to the extinction of mankind. After thousands of years of development, new life was born, and three countries appeared in the world. Fan Xian's mother, Ye Qingmei, was a scientist from the ancient era. Fan Xian had traveled in time to the distant future. Thus, Fan Xian was a transmigrator.
Yes, the Fan Xian in Joy of Life was a transmigrator. His original name was Fan Shen, and he was a patient with myalgia gravis. When he woke up, he found that his soul had transmigrated into a newborn healthy baby, Fan Xian. Fan Xian brought his modern memories to the Qing Kingdom and became the Qing Emperor's illegitimate son. He experienced all kinds of adventures and challenges in the Qing Kingdom. Thus, it could be said that Fan Xian had crossed into another world through his soul.
In the novel Joy of Life, Fan Xian was a transmigrator. He was a paralyzed patient in the early 21st century. When he died, he transmigrated into the body of Ye Qingmei's newborn son and retained his memories. The specific reason for Fan Xian's transmigration was not clearly explained.
There were many explanations for why Yan Bingyun had stabbed Fan Xian. One possibility was to protect the safety of the Qing Kingdom. Yan Bingyun was a loyal member of the Qing Kingdom. He might have stabbed Fan Xian to prevent the Qing Kingdom from falling into internal strife. Fan Xian had discovered the collusion between the Second Prince and Eldest Princess in Northern Qi, as well as their illegal actions. Yan Bingyun might have done so to prevent Fan Xian from disrupting the Qing Kingdom's government. The other possibility was that Yan Bingyun wanted to express his inner feelings. His assassination of Fan Xian was only a formality. His true goal was to get in touch with the Second Prince. Yan Bingyun believed that the Second Prince had colluded with the Eldest Princess, embezzled the palace treasury's property, and had some unclear connections with the Northern Qi court officials. These actions were all despicable. Assassinating Fan Xian was only to make clear his position. The prerequisite for being loyal to the Qing Emperor was not to do anything that would harm the interests of the Qing Kingdom. In addition, according to the search results, Fan Xian was not truly dead. In the subsequent developments, Yan Bingyun gained the Second Prince's trust and pretended to rely on the Second Prince to be a spy for Fan Xian. In the end, Fan Xian was rescued. Thus, Yan Bingyun stabbing Fan Xian was only a temporary facade. The story that followed would be even more exciting.
Fan Xian was a character in Joy of Life, but there was no mention of his relationship with the other characters. Therefore, according to the information provided, I don't know if Fan Xian has a relationship with other characters.