Li Shi, Dezong of the Tang Dynasty in the history books, was a frustrated monarch who had a rough life. But when later generations of historians came through the soul, it coincided with the fall of Chang'an in Tianbao's fifteenth year, and everything changed. He looked at his mother, Shen, who had no idea of the cruel fate beside him, and remembered the regret that he had not been able to find her in his previous life until his death. He thought of the ending of the Tang Dynasty that gradually sank under the iron heel of the feudal town, and his eyes ignited with blazing fire. When the rebel army surrounded him, he wisely retreated from the powerful enemy to protect his mother from danger; after suppressing the rebellion, he reformed the government and strengthened the central government; when the feudal town was in chaos, he conquered it with kindness and power. As an emperor, with a thousand years of historical knowledge, I will turn the tide from falling, support the building that is about to collapse, and vow to let the bright moon of the Tang Dynasty shine brightly on thousands of miles of rivers and mountains again.