In the second year of Zhenyuan, Hehuang fell, and the shuo wind swept over the city of Lingzhou. Shen Jingchen, the son of a criminal official, rose up from a desperate situation with his historical knowledge and wisdom. He suppressed Hexi, protected the people, and brought peace to the Tang Dynasty, rewriting the fate of the country that had declined for a hundred years in the middle and late Tang Dynasty.