After the Anshi Rebellion, the defenders of the Western Regions lost contact with Chang'an for twenty years. The white-haired general Guo Xin led the isolated city to hold on. I wonder if the Tang Dynasty is still there. His adopted son Guo Ning traveled eastward with a list of those killed in battle for fifty years to seek help, crossing thousands of miles of enemy territory, only to find that the imperial court had long forgotten the Western Regions...
