There were many explanations for why the Emperor had saved Yan Bingyun. One explanation was for the stability of the Qing Kingdom and Fan Xian's escape. Fan Xian knew that the Second Prince would chase after him, so they had discussed this plan beforehand. They would let Yan Bingyun stab him so as to give him a chance to escape and let Yan Bingyun gain the Second Prince's trust. In addition, Yan Bingyun was an important figure in Joy of Life, and he was arrested because he had leaked the news. The Qing Emperor had to protect Yan Bingyun. Other than returning the land, he agreed to Northern Qi's terms of exchanging Xiao En and Si Lili. He also sent Fan Xian as an envoy to Northern Qi. Thus, the reason the Emperor saved Yan Bingyun was for the stability of the Qing Kingdom and Fan Xian's escape, as well as to protect the important figure Yan Bingyun.

Yan Bingyun was one of the characters in the novel Joy of Life and the movie series of the same name. He was the son of Yan Ruohai, the head of the Qing Inspection Council, and had received strict training in the drama. Yan Bingyun had made a huge contribution to the Qing Kingdom in the war. He had been sent by the Qing Emperor to spy on the Qing Kingdom's military situation in advance. Through the military situation he had sent back, the Qing Kingdom had won. The Qing Emperor thought highly of Yan Bingyun. He supported Yan Bingyun to become the new Director of the Overwatch Council and take over Chen Pingping's position. Thus, the Qing Emperor had agreed to Northern Qi's conditions to exchange for Yan Bingyun not only because of his contributions to the Qing Kingdom in Northern Qi, but also because he valued Yan Bingyun. The specific ending and plot development could only be known after further viewing or reading related works.
The Qing Emperor agreed to Northern Qi's conditions to exchange Yan Bingyun because Yan Bingyun had made a great contribution to the Qing Kingdom in the war. He had been sent by the Qing Emperor in advance to spy on the Qing Kingdom's military situation. Through the military situation he had sent back, the Qing Kingdom had won. Yan Bingyun became the greatest contributor. In addition, the Qing Emperor thought highly of Yan Bingyun. He supported Yan Bingyun to become the new Director of the Overwatch Council and take over Chen Pingping's position. Yan Bingyun was loyal to the Qing Kingdom and the Qing Emperor. His identity was special. He was an extremely important spy leader of the Qing Kingdom. Thus, the Qing Emperor's decision to agree to exchange Yan Bingyun was not only because of his contribution to the Qing Kingdom in Northern Qi, but also because he valued Yan Bingyun.
The Qing Emperor agreed to Northern Qi's conditions to exchange Yan Bingyun because Yan Bingyun had made a great contribution to the Qing Kingdom in the war. He had been sent by the Qing Emperor in advance to spy on the Qing Kingdom's military situation. Through the military situation he had sent back, the Qing Kingdom had won. Yan Bingyun became the greatest contributor. In addition, the Qing Emperor thought highly of Yan Bingyun. He supported Yan Bingyun to become the new Director of the Overwatch Council and take over Chen Pingping's position. Yan Bingyun was loyal to the Qing Kingdom and the Qing Emperor. His identity was special. He was an extremely important spy leader of the Qing Kingdom. Thus, the Qing Emperor's decision to agree to exchange Yan Bingyun was not only because of his contribution to the Qing Kingdom in Northern Qi, but also because he valued Yan Bingyun. The specific ending and plot development could only be known after further viewing or reading related works.
Fan Xian had saved Yan Bingyun. In Joy of Life, Fan Xian rescued Yan Bingyun in Northern Qi and brought her back to the Qing Kingdom. Fan Xian used Shen Wan 'er's infatuation with Yan Bingyun to successfully save him. After they returned to the Qing Kingdom together, Yan Bingyun received an important position from Chen Pingping and took over the position of Director of the Overwatch Council. Thus, Fan Xian had indeed saved Yan Bingyun.
Yes, Fan Xian had successfully rescued Yan Bingyun. In Joy of Life, Fan Xian did not die after being stabbed by Yan Bingyun. 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. He decided to return to Jingdou to investigate this matter thoroughly. On the way back to the Qing Kingdom, Fan Xian successfully rescued Yan Bingyun.
Fan Xian rescued Yan Bingyun. In Joy of Life, Fan Xian did not die after being stabbed by Yan Bingyun. 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. He decided to return to Jingdou to investigate this matter thoroughly. On the way back to the Qing Kingdom, Fan Xian successfully rescued Yan Bingyun.
Fan Xian had saved Yan Bingyun. In Joy of Life, Fan Xian did not die after being stabbed by Yan Bingyun. 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. He decided 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. Although Yan Bingyun did not answer, based on the fact that Fan Xian had saved Yan Bingyun's lover, Yan Bingyun should agree to Fan Xian's request. Thus, Fan Xian successfully rescued Yan Bingyun and brought him back to Qing Kingdom.
Fan Xian had saved Yan Bingyun. In Joy of Life, Fan Xian successfully rescued Yan Bingyun and brought her back to the Qing Kingdom. Fan Xian used Shen Wan 'er's infatuation with Yan Bingyun to successfully save him. After they returned to the Qing Kingdom together, Yan Bingyun received an important position from Chen Pingping and took over the position of Director of the Overwatch Council.
Yes, Fan Xian had saved Yan Bingyun. In " Celebrating Years," after Fan Xian was stabbed by Yan Bingyun, he 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. He decided 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. Although Yan Bingyun did not answer, based on the fact that Fan Xian had saved Yan Bingyun's lover, Yan Bingyun should agree to Fan Xian's request. Thus, Fan Xian successfully rescued Yan Bingyun and brought him back to Qing Kingdom.
Fan Xian had successfully saved Yan Bingyun. In Joy of Life, Fan Xian saved Yan Bingyun in Northern Qi and brought her back to the Qing Kingdom. Fan Xian used Shen Wan 'er's infatuation with Yan Bingyun to successfully save her. After they returned to the Qing Kingdom, Yan Bingyun received an important position from Chen Pingping and took over the position of Director of the Overwatch Council.