The play unfolds against the background of the Roman Empire and reveals an important military force that shakes the rule of the Roman Empire. In 400 AD, the Roman Empire's rule in the world was weakening day by day, but it was still the most powerful country. During this period, an army of Huns from the east, led by Attila, swept across Eurasia and began to challenge the supremacy of the Roman Empire. Attila, the leader of the Xiongnu, was brave and good at fighting when he was young, but he was also cruel by nature. the decisive rise of Xiongnu power was after Attila became king of the Xiongnu Empire. In 433 AD, Attila, 27, and his brother Brida inherited the imperial throne from their uncle Roas. In 436, Attila mercilessly murdered his brother, landed the empire alone, and soon unified the entire tribal alliance. Compared with his predecessors, Attila is more ambitious, more aggressive and extremely intelligent. He humiliated the Romans, frightened the Germans, and had such a powerful power to frustrate the westerners that he and his Xiongnu iron horses were called "the whip of God". At that time, Rome had not lost control of the Huns and was able to use them as mercenaries to attack other barbarians, Lord.