Fan Xian interrogated Si Lili.

Fan Xian used modern interrogation techniques to interrogate Si Lili. First, he told Si Lili that her life was in his hands and threatened to put her under house arrest and dark loneliness for life. Fan Xian also threw out a few deadly pills in an attempt to lure Si Lili into taking them. Then, Fan Xian told Si Lili about her longing for life, beauty, and youth, trying to entice her to resist the temptation of death. In the end, Fan Xian successfully learned from Si Lili that the mastermind behind the Niulan Street assassination was Lin Gong.

Fan Xian interrogating Si Lili at night was a plot that happened in the novel " Celebrating Years." Fan Xian used modern interrogation techniques to interrogate Si Lili. He told Si Lili that her life and death were in his hands and threatened to put her under house arrest and dark loneliness for life. Fan Xian also threw out a few deadly pills in an attempt to lure Si Lili into taking them. During the interrogation, Si Lili revealed some key information, including the identity of Northern Qi's spy in the Qing Kingdom and the fact that Lin Gong was the mastermind behind the Niulan Street assassination. This night trial allowed Fan Xian to have a deeper understanding of Si Lili's abilities and background. It also laid the foundation for the subsequent development of the plot.

After Fan Xian interrogated Si Lili, he learned that the mastermind was Lin Gong.

Fan Xian interrogated Si Lili and learned that the person was Lin Gong.

Fan Xian used modern interrogation techniques to interrogate Si Lili. First, he told Si Lili that her life was in his hands and threatened to put her under house arrest and dark loneliness for life. Fan Xian also threw out a few deadly pills in an attempt to lure Si Lili into taking them. Then, Fan Xian told Si Lili about her longing for life, beauty, and youth, trying to entice her to resist the temptation of death. Finally, Fan Xian told Si Lili about the power of hope, trying to move her. Through these methods, Fan Xian successfully learned from Si Lili that the mastermind behind the Niulan Street assassination was Lin Gong.

In the remaining years of Qing, Fan Xian interrogated Si Lili. Fan Xian used superb interrogation techniques and obtained the answer he wanted through Si Lili's interrogation. Fan Xian learned that the mastermind behind the Niulan Street assassination was Lin Wan 'er's second brother, Lin Gong. In order to protect Fan Xian, Si Lili would rather be tortured than betray him. The truth of all this was surprising, and the story of Qing Yuannian was even more exciting.

During the Qing years, Fan Xian interrogated Si Lili and learned that the mastermind behind the Niulan Street assassination was Lin Gong. Si Lili did not reveal the identity of the mastermind during the interrogation.

Si Lili and Fan Xian were not together. Even though Si Lili had a good impression of Fan Xian, Fan Xian already had a wife and concubines and the Northern Qi Emperor, Zhan Doudou. To protect Zhan Doudou and the stability of Northern Qi, Si Lili married Zhan Doudou and raised Fan Xian's daughter, Red Bean Rice. Thus, Si Lili and Fan Xian did not develop into a romantic relationship.

Si Lili was not with Fan Xian. In the end, Si Lili married the Northern Qi Empress Zhan Doudou and became the Northern Qi Imperial Consort. Although Si Lili had a good impression of Fan Xian, they did not develop into a relationship.

The relationship between Fan Xian and Si Lili in the novel " Celebrating Years " was that Si Lili was Fan Xian's concubine. In the novel, Si Lili loved Fan Xian and married him. Other than Lin Wan 'er, Fan Xian also married Si Lili. In order to protect Fan Xian, Si Lili had even been tortured twice. In the end, Si Lili married the Northern Qi Emperor, Zhan Doudou, and became the Northern Qi Imperial Consort. She also took on the responsibility of raising Fan Xian and Zhan Doudou's daughter, Red Bean Rice. Fan Xian and Si Lili had a good impression of each other, and Si Lili also fell in love with Fan Xian. Fan Xian's feelings for Si Lili were also expressed in the fact that he had helped Si Lili understand medicine and used the fate of the country to save a woman. Thus, there was a complicated love story between Fan Xian and Si Lili.