In 1943, in the Lunan area of ​​Shandong Province, Chen Tian Fang, commander of the Lunan Independent Brigade of the Eighth Route Army, led his troops to block the Japanese army. Chief of Staff Lu Chong received an urgent message and mobilized Qin Feng's Canglang Commando to go to Ganyu in the northernmost part of Jiangsu to rescue our party comrade Wang Hua who was imprisoned by the Japanese army. During the rescue process, Wang Hua was attacked and sacrificed. Ouyang Bing's identity as a communist was exposed and he left the military command action team. Through the secret message Wang Hua left on Ouyang Bing before his death, Ouyang Bing learned the location of the tungsten to the west of Shijiagou. The Canglang Commando rushed to Jixiang Village, where the Japanese army was also looking for tungsten. The Canglang Commando and others blocked the Japanese army, withstood the Japanese offensive and successfully transferred the tungsten.