"The Longest Day in Chang'an 2" is a period legend drama starring Zhang Ruoyun and Li Qin, co-starring Chen Daoming, Wu Gang, Guo Qilin, Li Xiaoran, Song Yi, Xin Zhilei, etc. The drama is adapted from the novel of the same name by Maoni, telling the story of a mysterious young man named Fan Xian, who goes through various trials and hardships in his family, the martial arts world, and the court, and writes a legendary life story.