Eren's death in the manga was a powerful moment. It was brought about by a combination of his own decisions, the opposition he faced, and the overall plot developments. It left a lasting impression on readers.
In the novel, Teng Zijing didn't actually die and lived to the end. However, in the drama, he changed his name to Teng Zijing, which meant that he was destined to have a bumpy fate. He rejected the opportunity to leave Jingdou and be with his wife and children. He chose to stay behind to protect Fan Xian and died at Cheng Jushu's hands. Then why did Teng Zijing have to die? Actually, the TV series had changed a lot of things about Teng Zijing. Compared to the Teng Zijing in the novel, the Teng Zijing in the TV series was given more flesh and blood, and more real emotions. He was also the first friend Fan Xian had made when he chose to enter Jingdou to face the schemes of power and complicated human hearts. As Fan Xian's first friend of the same age, he was someone Fan Xian trusted from the bottom of his heart. Therefore, he was destined to become the most important whetstone for the male protagonist to change his mind and firm his goals. In the Niulan Street assassination case, Teng Zijing died protecting Fan Xian. This made Fan Xian realize from the bottom of his heart that what he had come to Jingdou to face was not to be clever, to play tricks, or to move his mouth and recite a few poems to turn danger into safety and intimidate others. It was the true, cold, cruel shouting of fighting and killing. Blood could be shed at any time, and death could be at any time. Human lives were like grass, so what if a guard died in the eyes of others? But in the eyes of Fan Xian from the 21st century, everyone was equal. This was his friend who had died to protect him! Therefore, Teng Zijing's death had a great impact on Fan Xian. It was an important plot twist. Fan Xian swore to avenge Teng Zijing and give him and his wife and children an explanation. To put it bluntly, it was just an emotional need. Although it was reasonable to drag Teng Zijing to worship the heavens, Teng Zijing did not die in the novel. If you like him, you can go and read the novel haha ~