In the original novel Joy of Life, the Northern Qi Princess was the daughter of Li Yunrui and Lin Ruofu. Her name was Lin Wan 'er. Lin Wan 'er was a woman with a terminal illness. After meeting Fan Xian, they fell in love. In order to treat her, Fan Xian took her everywhere to seek medical advice and finally cured her illness.

In Joy of Life, the name of the Northern Qi Princess was Li Yunrui. Li Yunrui was one of the rulers of Northern Qi, the mother of the Emperor Zhan Doudou, and also the lover of the male lead, Fan Xian. She was an ambitious and scheming woman who would do anything to gain power.
In the second season of Joy of Life, the Northern Qi Princess was played by the actress Mao Xiaotong. She was the official couple of the Qing Kingdom's First Prince. She married the First Prince and became a henpecked wife. The Northern Qi Princess appeared in the play with a beautiful smile and beautiful eyes, leaving a deep impression on people. She had a special relationship with Fan Xian, and the plot about her in the play triggered the audience's anticipation and heated discussion. The specific plot development and the direction of the role of the Northern Qi Princess needed to be understood by watching Joy of Life Season 2.
In the second season of Joy of Life, the role of the Northern Qi Princess was played by the actress Mao Xiaotong. She was the official wife of the Qing Kingdom's First Prince, and she had a marriage alliance with the First Prince. The Northern Qi Princess had a charming and lively image in the play, showing Yu Feihong's acting skills. She had an interaction with Fan Xian in the play, and Fan Xian successfully persuaded her to help him clear his fake death identity. The role of the Great Princess of Northern Qi only appeared in the second season, so her story and ending were still unknown.
The Great Princess of Northern Qi in the second season of Joy of Life was someone who had come to marry the Great Prince of the Qing Kingdom. She played an important role in the play, helping Fan Xian expose Zhan Doudou's identity as a woman. In the end, the Great Princess of Northern Qi married the Great Prince of Qing Kingdom and lived a happy life in Dongyi. This was a perfect ending in the plot.
In the second season of " Celebrating the New Year," Mao Xiaotong's role as the Northern Qi Princess was one of the most eye-catching new characters in the show. She won the audience's favor with her unique charm and delicate image. The Great Princess of Northern Qi was a lively and quick-witted woman who displayed outstanding wisdom and courage. The interaction with the First Prince was filled with sweetness and tension, and the relationship between the two was highly anticipated. In the end, the Great Princess of Northern Qi married the Great Prince of the Qing Kingdom and lived a happy life.
In the second season of Joy of Life, Mao Xiaotong played the role of the Northern Qi Princess. She was a petite and weak character who did not want to be outdone. She showed her cute and brave side. The Northern Qi Princess married the Great Prince in the play, but she knew nothing about the Great Prince's true situation. She looked like a little bird that relied on others and lacked a strong opinion. She had almost become Fan Xian's tool. However, she was not a brainless, naive, and sweet character. She had shown her cleverness and wit in her past actions. As for the ending of the Great Princess of Northern Qi and whether she would eventually marry the Great Prince, there was no mention of it in the current search results.
In the original novel, there was the role of the Northern Qi Princess. In Joy of Life, the Northern Qi Great Princess was the Northern Qi Empress's half-sister. She was the official consort of the Qing Kingdom's Great Prince and Shen Wan 'er's best friend. She was arranged to marry far away in the Qing Kingdom and follow Fan Xian to the Qing Kingdom. Therefore, it could be concluded that there was indeed a role of the Northern Qi Princess in the original novel.
In the search results provided, there was no clear mention of whether the Northern Qi Great Princess existed in the original work. Therefore, I don't know if the original book had the Northern Qi princess.
In the search results provided, there was information about the Northern Qi Princess in the original work of Joy of Life. According to the search results, there was indeed the existence of the Northern Qi Princess in the original novel. She was the daughter of the Northern Qi Emperor and had married the Great Prince of the Qing Kingdom. She had become the symbol of the marriage alliance between Northern Qi and the Qing Kingdom. She played an important role in the play and interacted with Fan Xian. She also revealed the news that Zhan Doudou was a girl. However, there was no mention of who she married. Therefore, the original novel did have the role of the Northern Qi Princess.
In Joy of Life, the Royal Princess of Northern Qi was a scheming and ambitious character. She held the power of the palace treasury and yearned for more power. The Eldest Princess had once betrayed Yan Bingyun to achieve her goal. There were complicated feelings between her and Fan Xian. Fan Xian was dissatisfied with her betrayal, but he also sympathized with her. The Eldest Princess 'true goal was to break up the Overwatch Council and control the palace treasury's smuggling channels. Her story showed her resourcefulness and courage, as well as her desire for power. Her ending was that she was chased out of Jingdou by the Qing Emperor and sent back to her fief, Xinyang.