Chang'an Ten Thousand Gates

In the Yuanhe decade of the Tang Dynasty, Chang'an was shrouded in terror. Bai Juyi, the official of the East Palace, stepped forward in times of crisis. He hesitated, he had no choice but to finally turn the tide. But the result was to "move to the left Sima of Jiujiang County". The merits and demerits of Qianqiu are left to your comments.