Part family history, part blood and fire on the frontier.
In the first year of Emperor Kaihuang's reign in the Sui Dynasty, Pei Shizhong, an 18-year-old boy from Guanlong, entered the palace with a halberd. From then on, five generations of the Pei family began to watch Liaodong for 152 years. From the bloody bloodshed in the Golden Palace of Emperor Wen of the Sui Dynasty to the three conquests of Goguryeo by Emperor Yang, from the personal conquest of Jieshi by Emperor Taizong of the Tang Dynasty to the Khitan rebellion in the Wu Zhou Dynasty, the descendants of the Pei family either died on the battlefield, were demoted to a remote area, or stood alone in the city, or entered the dynasty as prime ministers. Five generations used blood as ink to write a "Liaodong War Strategy".
On the night when the Sui army was destroyed in Sa Shui, Pei Shizhong was hit by seven arrows in the snowy plains of Liaoze, and he defeated the 300,000 pursuers with 3,000 remaining soldiers; when the Tang army was stationed in the city in the cold winter, Pei Zhao took over the broken map drawn by his father and continued to operate the Liaodong intelligence network; the Khitan army besieged the city with 200,000 cavalry, and Pei Guangting wrote a blood letter "The city is here and the people are here" on the city wall, waiting for a year to finally defeat the enemy. There are also eighty-seven secret letters from Shangguan Wan'er spanning thirty years, connecting the border and the court, witnessing an unspeakable friendship in the snow.