Invasion and resistance are not only on the smoke-filled battlefields, but there are also many unknown heroes in the rear, who have made vital contributions to our victory in the Anti-Japanese War. Lu Yunshen relied on his extraordinary carving skills to enter the Japanese army alone. He was accused of being a traitor, was criticized by thousands of people, betrayed and separated from his relatives. After going through many dangers, he used a carving knife to cast a solid Great Wall of China on paper, and finally succeeded in destroying the Japanese army's "Shirt Work".