Envoy of the Tang Dynasty

In the history books, there are only a few lines about the fall of Anxi and Beiting. But Zhang Huaiyuan knew that behind those few lines were a group of Tang troops trapped in the Western Regions. There was no news from Chang'an, and reinforcements were delayed. They still guarded the isolated city, bearing the title of the Tang Dynasty, until their names were buried in the yellow sand. In 762 AD, Zhang Huaiyuan was reincarnated into the Zhang family in Dunhuang with the memory of a doctor of Tang history, becoming the eldest grandson of the direct line of power. Eighteen years later, he rescued a sergeant from Anxi who was traveling eastward for help from the Ma Thief Village, and also grabbed the first rein that changed history. Forty servants broke into the stronghold, 24 people entered the capital, and more than a hundred new troops fought bloody battles in Fengtian. He exchanged military honors for military power, used salt to support military supplies, used farming to gather soldiers and civilians, and used gunpowder to destroy fortified cities. When the imperial court's reinforcements could not reach the Western Regions, he personally led the troops there. The way back to Hexi was cut off, so he fought back city by city. From Dunhuang to Chang'an, from Fengtian to Qiuci, from Hexi to Congling. In this life, the lone army in the Western Region will not disappear silently. The festivals of the Tang Dynasty will never stop at Yumen Pass.