The Red Flame Army in Nirvana in Fire was a fictional army. Its historical prototype did not exist in reality. The Red Flame Army was a fictional army in the novel " Nirvana in Fire ". It was created by Mei Changsu to investigate all kinds of intelligence and cases inside and outside the court. The existence of this fictional army was to construct the character of Mei Changsu and to provide background and plot development for the story. In history, the Red Flame Army was a famous peasant uprising army at the end of the Ming Dynasty. The army was founded by Zhu Yuanzhang's grandson, Zhu Biao, and later became known as the Biao Army. The leader of the Red Flame Army, Zhu Biao, had once led the army to capture Nanjing and became a famous general in the late Ming Dynasty. Although the Red Flame Army was fictional, its historical background and plot were closely related to the political and military situation at the end of the Ming Dynasty, so it was often quoted and used as a reference in games and novels.