During the Eastern Han Dynasty, the Northern Xiongnu cavalry swept across the Western Regions with the yellow sand, and Geng Gong led hundreds of Han troops to defend the isolated city of Shule. In the eighth month of the siege, there were only 26 Han soldiers left. They were in ragged clothes and still clutching the broken banners. Until Emperor Zhang sent 7,000 reinforcements to rush through the snow, and after a bloody battle to break through, 13 people finally staggered into Yumen Pass, with their armor cracked but their spines still straight...
Adapted from real historical events