Advance towards the gunfire

This story takes place in early 1945, when a transport plane carrying the latest cipher machine and key book was on its way to Japan. In a certain province in northern China, the commander of the Independent Third Regiment, Liu Jiangong (played by Wang Xin), is leading his regiment in a life-and-death struggle against the Japanese army, which is stationed at the fortress. As the Japanese transport plane carrying the cipher machine and key book flew over the Tiger Tooth Ridge, it coincided with the birthday celebration of the bandit leader, Lei Zifeng's (played by Wu Qilong) mother. To make a noise for his mother, Lei Zifeng accidentally hit the transport plane with a cannon that he was experimenting with. The plane crashed right in front of Shi Gandang (played by Xie Mengwei) and his grandfather, who were guarding the Tiger Tooth Ridge, and Shi Gandang unexpectedly obtained the cipher box. At this moment, after achieving victory in battle, Liu Jiangong was also ordered to rush to Flying Tiger Ridge to search for the cipher box and key book with the envoy, Shiguan Yufei (played by Gan Tingting), and soon discovered the cipher book. At this time, the Japanese army also arrived...