I am Xiao Lie, the governor of the Northern Territory of Dajing Town. I guarded Yanmen Pass for three years and fought more than seventy major and minor battles with the Xiongnu. That day, while patrolling the customs, she picked up a little beggar named A Chou who was about to starve to death. However, she walked into my handsome tent at night and took out half of a blood-stained Xiongnu defense map - "Grand Governor, the Huns will attack Zuoying in three days." Later I found out that this disgraced beggar was the spy planted by the Beggar Gang outside the enemy camp. I relied on the sand table to deduce the battle situation, and she relied on begging to inquire about the military situation. In the beacon fire at Yanmen Pass, one of us led the troops to defend against the enemy, and the other lurked to deliver the message, guarding not only the rivers and mountains, but also the thousands of people behind us.