The plot of Fan Xian being stabbed by Yan Bingyun did not appear in the original novel of Joy of Life. This plot was adapted from the TV series Joy of Life. The purpose was to make Yan Bingyun gain the trust of the Second Prince so that he could be a better spy. Therefore, it was impossible to determine which chapter of the novel Fan Xian was stabbed by Yan Bingyun.

In the TV series Joy of Life, Yan Bingyun stabbed Fan Xian because he wanted to protect the safety of Qing Kingdom. The Second Prince had colluded with the Northern Qi people. Fan Xian and Yan Bingyun discovered this fact and planned to punish the Second Prince. However, they were surrounded by the Second Prince's men and the situation was urgent. In order to let the others escape, Yan Bingyun chose to stab Fan Xian and sacrifice himself to save the others. This action was also to make the Second Prince trust Yan Bingyun more, so that Yan Bingyun could better carry out his undercover mission. Fan Xian and Yan Bingyun had discussed this plan in advance. Fan Xian faked his death so that he could more smoothly do what he wanted to do. Thus, Yan Bingyun had stabbed Fan Xian out of consideration for protecting the Qing Kingdom and Fan Xian.
There were many explanations and speculations about the reason Yan Bingyun stabbed Fan Xian in Joy of Life. One explanation was to protect the safety of the Qing Kingdom. The Second Prince might kill Fan Xian and the others to protect his own interests. The other explanation was that Fan Xian and Yan Bingyun had discussed this plan and had Yan Bingyun stab him in order to give Fan Xian a chance to escape and let Yan Bingyun gain the Second Prince's trust. Fan Xian's plan of faking his death was to awaken himself and start breaking free from control. However, there is no clear answer to the specific reason, so we cannot be sure why Yan Bingyun stabbed Fan Xian.
After Yan Bingyun stabbed Fan Xian, there were many possibilities for the plot to develop. According to the descriptions in documents 2 and 3, Fan Xian did not die. Instead, he was rescued. Yan Bingyun's goal in stabbing Fan Xian was to gain the Second Prince's trust so that he could be a better spy. The details of Fan Xian's subsequent plot after being stabbed by Yan Bingyun required further reading of the novel or watching the TV series Joy of Life to understand.
After Yan Bingyun stabbed Fan Xian, Fan Xian did not die. Instead, he was rescued. Yan Bingyun's goal in stabbing Fan Xian was to gain the Second Prince's trust and protect Fan Xian's life. The specific plot development was not clearly revealed in the search results provided, so the specific follow-up plot after Fan Xian was stabbed by Yan Bingyun could not be determined.
After Yan Bingyun stabbed Fan Xian, Fan Xian did not die. Instead, he was rescued. After Fan Xian checked the palace treasury accounts in Northern Qi, he discovered the Second Prince and Eldest Princess 'behind-the-scenes instigation. This made Fan Xian decide to return to Jingdou to investigate this matter thoroughly. On the way back to the Qing Kingdom, Fan Xian asked Yan Bingyun if he would help him, but Yan Bingyun did not answer. The details of Fan Xian's subsequent plot after being stabbed by Yan Bingyun needed to be further understood by watching the TV series Joy of Life.
There were many explanations for why Yan Bingyun had stabbed Fan Xian. According to the first document, Fan Xian and Yan Bingyun had discussed this plan. He wanted Yan Bingyun to stab him in order to give him a chance to escape and let Yan Bingyun gain the Second Prince's trust. Files 2 and 3 also mentioned a similar explanation. They believed that Yan Bingyun had stabbed Fan Xian for Fan Xian's rebirth and self-awakening, allowing Fan Xian to escape control. The fourth document believed that Yan Bingyun had deliberately betrayed the Second Prince in order to infiltrate the Second Prince. Files 5 and 7 mentioned the Second Prince's letter and Fan Xian's position. Yan Bingyun might have stabbed Fan Xian to gain the Second Prince's trust and become a spy. In summary, the specific reason Yan Bingyun stabbed Fan Xian was probably to escape, to be reborn, to awaken himself, to be a spy, or to gain the Second Prince's trust.
There were several possibilities for why Yan Bingyun had stabbed Fan Xian. According to the plot of " Joy of Life," Yan Bingyun might have killed Fan Xian for the stability of the Qing Kingdom. In addition, there were also people who believed that Yan Bingyun was deliberately betraying the Second Prince and had sent him inside as a spy so that Fan Xian and the Qing Kingdom diplomatic mission could return to the capital smoothly. However, these were only the audience's guesses. The specific reasons might need to be revealed in the second season of the series.
The original novel, Joy of Life, did not clearly reveal the specific follow-up plot after Yan Bingyun stabbed Fan Xian. However, according to the explanation and speculation in the search results, after Fan Xian was stabbed by Yan Bingyun, Yan Bingyun gained the Second Prince's trust and pretended to rely on the Second Prince to become Fan Xian's spy. After Fan Xian was rescued, they continued to work together and shared their plans in Northern Qi. However, for more details, you may need to refer to other sources or watch the TV series Joy of Life. Therefore, there was no conclusive answer to the exact details of what happened after Yan Bingyun stabbed Fan Xian.
There were many explanations for why Yan Bingyun had stabbed Fan Xian. According to the first document, Fan Xian and Yan Bingyun had discussed this plan. He wanted Yan Bingyun to stab him in order to give him a chance to escape and let Yan Bingyun gain the Second Prince's trust. Files 2 and 3 also mentioned a similar explanation. They believed that Yan Bingyun had stabbed Fan Xian for Fan Xian's rebirth and self-awakening, allowing Fan Xian to break free from the state of being controlled. In addition, documents 4 and 6 mentioned that for the stability of the Qing Kingdom, Yan Bingyun did not want the Qing Kingdom to fall into civil strife, so he chose to stab Fan Xian to stop the civil strife. All in all, Yan Bingyun's goal in stabbing Fan Xian was for Fan Xian's escape, rebirth, and self-awakening, as well as the stability of the Qing Kingdom.
The following plot after Fan Xian was stabbed by Yan Bingyun was not clearly revealed in the original novel," Celebrating Years." However, according to some explanations and guesses, after Fan Xian was stabbed by Yan Bingyun, Yan Bingyun gained the Second Prince's trust and pretended to rely on the Second Prince to become Fan Xian's spy. After Fan Xian was rescued, he and Yan Bingyun discussed a plan. The specific follow-up plot may need to be understood by watching the TV series "Celebrating Years" or reading other relevant materials.