Ni Mantian of Hua Qiangu died in the end. He had been killed by Bai Zihua during the final battle. To be more specific, Ni Mantian had always had complicated feelings for Hua Qiangu during the emotional entanglement between Bai Zihua and Hua Qiangu. However, in the final battle, in order to prevent Hua Qiangu from obtaining the power of immortality, he had sacrificed his life to fight with Bai Zihua and was eventually killed by Bai Zihua.
The shadow in Qing Yuannian's novel did not die in the end. In the final battle, the Shadow, Fan Xian, Wu Zhu, and Fan Ruoruo joined forces to assassinate the Qing Emperor. Although the Shadow, Wu Zhu, and Fan Xian were all heavily injured, they all managed to keep their lives and left Jingdou together. Therefore, the shadow did not die at the end of the story.
The shadow in the novel did not die in the end. In the ending of the novel, the Shadow was stabbed by Ye Chong in the Battle Palace, but did not die. He, Fan Xian, Wu Zhu, and Fan Ruoruo had assassinated the Qing Emperor together. Although they had suffered serious injuries, they had managed to preserve their lives and leave Jingdou. Therefore, the shadow did not die at the end of the story.
There were several theories about the reason for Emperor Jiaqing's death. According to the records of the Qing Renzong Record, Emperor Jiaqing felt the heat on his way to the summer resort. Later, he died of a sudden stroke of cardiovascular disease at the age of 61. In addition, there was a folk legend that Emperor Jiaqing was killed by lightning because there was a thunderstorm in Chengde on the day of his death. However, according to historians, Emperor Jiaqing's death was more likely due to heart failure caused by long-term labor. Because the court concealed the cause of Emperor Jiaqing's death, there were many versions of legends about his death. In summary, the specific cause of Emperor Jiaqing's death was still uncertain. It might be due to a sudden situation caused by cardiovascular disease or other factors.
Fan Xian did not die. At the end of " Celebrating Years," Fan Xian returned to Jingdou in the Qing Kingdom. He confronted the Qing Emperor and finally killed him. Fan Xian's death was just a fake death. He, Yan Bingyun, and Wang Qinian had conspired to use a special prop to pretend that he had been stabbed to death by Yan Bingyun. This plan to fake his death was to protect himself and prevent him from being killed on the way back to Northern Qi. Fan Xian resurrected in the second season and fought with the Great Prince, Li Chengru, outside Jingdou to announce his return.
The reason for Haitang's death was because she had discovered the secret of Liu Sheng Piao Xu. Piao Xu had not abolished her martial arts and had been hiding beside Duan Tianya. She looked like an ordinary woman, but in fact, she was a minister who had been secretly getting rid of the Divine Marquis and preventing him from usurping the throne. In order to keep the secret, Yagyu Piaoxu killed Haitang. In addition, Haitang also discovered Piao Xu's true identity. Piao Xu did not want Duan Tianya to know that she was an assassin, so she chose to kill Haitang. However, these search results did not provide specific background information or plot details, so there was no definite answer.