There was no such person as Mei Changsu in history. Mei Changsu was a fictional character in the novel "Nirvana in Fire", created by the author Hai Yan. The novel " Nirvana in Fire " was a mystery novel set in ancient times. The plot was full of ups and downs, and the characters were vivid and loved by readers. Mei Changsu in the novel was a clever and witty, talented person. Because of his outstanding talent, he was known as the "Unicorn Genius" and played an important role in political struggles. However, the Mei Changsu in the novel was just a fictional character and had nothing to do with the historical figures in reality.