In the middle of the Xiyan Dynasty, imperial power declined and conflicts arose: the previous emperor suddenly died, and the young new emperor (who was 12 years old) ascended the throne. The government was firmly controlled by the Queen Mother (the new emperor's biological mother) and her relatives, the Xie family (the Queen Mother's maiden family). The local vassal kings are growing in power, secretly accumulating power, and coveting the throne; the Xiongnu invaders from the border are frequent, and the Xiyan troops are empty, the food and wages are insufficient, and the people on the border are displaced; the wealthy families have their own agendas, either relying on the Xie family, waiting to see the situation, or secretly supporting those who can be used, the mountains and rivers are in turmoil, and storms are coming. As the heart of the dynasty, Yunzhou City, the capital city, is prosperous on the surface, but in fact there are undercurrents. Every inch of bricks and tiles hides conspiracies and calculations, and every encounter may be a test and a plan.