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There was an emergency at Yangguan in Mobei, and a five-man guarding team was ordered to do so. They cleverly broke through the slanderous situation and captured the enemy's spies, but they were deprived of food by traitors. The small team went to Beijing to eliminate traitors and develop new sources of wealth. Finally, when the enemy cavalry was overwhelming, they went to the Western Regions to beg for help. They used their blood and wisdom to repel the powerful enemies, protect the tranquility of Yangguan, and engrave the loyalty of their comrades.