After the righteous killing of Liu Maoen, Lao Jiuyun Shangqi accepted the arrangement of the party organization, quickly left Luoyang, returned to Jiaodong, Shandong, and joined the 386th Brigade of the Shandong Column of the Eighth Route Army led by Xu Shiyou and became an acting company commander.

When he came to the Communist Party's own troops, Yun Shangqi really felt the difference between the revolutionary contingent and the Kuomintang troops, and the officers and men of the troops here were equal, united in one mind, full of vitality and high morale, and got along with the local masses as if they were a family, a natural and harmonious scene of joy. Everything made Yun Shangqi both novel and excited, and he couldn't help but feel like he was coming home, he was ready to try it out, and he was always ready to find an opportunity to perform well.

Recently, Xu Shiyou commanded the 386 Brigade to attack Weixian, Quzhou and other cities in Jiaodong one after another, and achieved great results, so the 386 Brigade held a military and civilian celebration with the local people in Xiangchenggu to celebrate the victory of the two cities, but never expected that this news would be obtained by the enemy.

Early the morning of the next day after the meeting, in order to avenge the previous defeats, the commander of the Japanese brigade An Tian commanded the Japanese cavalry and the Japanese infantry to take more than 60 vehicles and suddenly surrounded Xiangchenggu.

The Yasuda Brigade was subordinate to the Sakagaki Division and was the main force of the Japanese army. In the face of such a severe enemy situation, Xu Shiyou firmly proposed at the analysis meeting: "Defensive warfare is by no means blindly defensive, only offense is the best defense!" First of all, we must insist on destroying the enemy on the spot. As long as you are resolute and thorough, you can disrupt the enemy's deployment in one go, and then look for new fighters in the battle, so that you can better protect yourself. At present, there are more than 2,000 people in Xiangcheng, and the number of troops is not small. Although there is no danger to defend here, there are houses and villages to cover, which is still advantageous compared to the exposed Japanese army. As long as you dare to rush and fight, and effectively kill and injure the enemy's living force, you can thwart the enemy's sharp spirit. In addition, our troops on the periphery will be rushed to support the war, so that we can join forces with the outside and counter-encirclement. After saying this, everyone was all gearing up and excited.

At the meeting, Yun Shangqi took the initiative to invite Ying and led the whole company to attack the enemy's cavalry position from the flank and rear.

Yun Shangqi led his troops to quietly press the Japanese cavalry stranded near a sand dune first. This sudden attack of a team greatly surprised Yasuda, he never expected that the Eighth Route Army would dare to take the initiative to attack, so he hurriedly commanded the battle. What Yasuda didn't expect was that the speed of this small army was very fast, and when he was shocked, he had already rushed to the front of him, holding a bright bayonet and the cavalry in a scuffle, and many Japanese cavalry fell off their horses one after another, wailing nonstop.

Xu Shiyou, who was behind, paid close attention to the progress, and when he saw that the time was ripe, he ordered the cavalry of the Eighth Route Army to quickly kill from the other side and quickly enter the battle. The enemy cavalry suffered most of the casualties at once under the front and rear attacks.

Yun Shangqi was fighting with all his might, and when he turned his head, he suddenly found that under the jujube tree near the dune, there were Japanese soldiers waving flags, and he concluded that the jujube forest must be the enemy's hidden command post. So he quickly brought a platoon of fighters to touch it, and as the rows of grenades were thrown, the enemy headquarters was blown up, and the commander Yasuda was killed instantly.

Xu Shiyou saw the opportunity and immediately organized the troops to counterattack, and the team rushed back and forth, which further disrupted the enemy's deployment. Several teams were combined in one place, and the combat strength of the Eighth Route Army surged, counter-outflanking layer by layer, attacking alternately, and advancing in turn. The battle continued into the afternoon, and street battles were fought in the village, dozens of times, and the Japanese suffered heavy casualties, and finally had to withdraw from the battle in disarray.

After a whole day of fierce fighting, more than 500 enemies were annihilated, and the commander of the enemy brigade An Tian was killed, and the 386th Brigade of the Eighth Route Army won another major victory. After the war, Xu Shiyou, on behalf of the brigade headquarters, personally rewarded Yasuda's command knife to Yun Shangqi.