In 446, the Xiongnu rebel Gai Wu (蓋吳) rose in the Guanzhong region, and when Emperor Taiwu personally attacked Gai, he found weapons in Buddhist temples and believed that Buddhists were conspiring against him. Cui, who despised Buddhism, fanned the flames, and Emperor Taiwu first slaughtered the Buddhist monks in Chang'an. Cui then, despite Kou Qianzhi's opposition, suggested to Emperor Taiwu to slaughter all monks in the empire. Emperor Taiwu proceeded to slaughter the monks in Chang'an, destroy the statues, and burn the sutras. He then issued an empire-wide prohibition of Buddhism. Crown Prince Huang, however, used delaying tactics in promulgating the edict, allowing Buddhists to flee or hide, but it was said that not a single Buddhist temple remained standing in Northern Wei. This was the first of the Three Disasters of Wu.