In the winter of the first year of Jianchu's reign, Seoul, the last city in the Western Regions Protectorate, was under heavy siege. Geng Lin, a student of the Department of Modern History, traveled through time and became Geng Gong, a famous general of the Eastern Han Dynasty. He faced the desperate situation of the 50,000-strong coalition army in Kucha with only 26 people left in the city. Relying on his familiarity with the "Book of the Later Han", he will rewrite the tragic epic of the thirteen soldiers returning to Yumen. When the arrows at the head of Shule City are soaked in salt water, and when the spring breeze at Yumen Pass blows the broken battle flag again, a story about an isolated city, blood and the survival of civilization slowly unfolds in the folds of history...
