In the seventh episode, the Soviet Red Army looked down on the Eighth Route Army. The story of episode 7 of "spirit of war" introduces that after the 36th regiment rushed into the northeast, there was a serious shortage of materials and equipment. The head of the team, Wang Beifeng, came up with an idea to find the Soviet Red Army stationed nearby to "have a windfall". Yu Chengshan went, and he was a guard follower. In the Soviet camp, the Soviet army completely rejected a series of demands from Wang Beifeng, and a group of people clashed with the Soviet army. Yu Chengshan represented the Eighth Route Army against the Soviet Union. The Soviet Union dismissed Cheng Shan, saying that Yu Chengshan was a coward. Encouraged by Zhang Ying, Yu Chengshan won the Soviet Hercules in the competition. As a result, he not only didn't make his eldest brother angry, but gained extra respect. During the dinner, Wang Beifeng indicated to the Soviet commander that a large number of weapons and equipment were coming, and he had to push his luck to get some coveted Japanese mountain guns. When carrying weapons and ammunition, a drunken Soviet officer kissed Zhang Ying, and Yu Chengshan was jealous. Yu Chengshan has made contributions, but his heart is still on Liao's side, on the side of the 45 th Brigade. Considering Wang Beifeng's kindness, he discussed with Tuga to fight a few more wars and make some contributions to repay Wang Beifeng. Wang Beifeng, who returned home with a full load, set up a gun company with great interest, and made Cao Gen, who had received artillery education and training, a gun company commander.