Although the Song and Lu states had established an alliance, they were hostile to each other for a longer time. The Song State has been looking at the Qi State for all these years, and now there are signs that the Song State will join forces with the Qi State to launch a new war against the Lu State. It turned out that the Song people had built several fortresses near the border of the Lu State and began to hoard war materials.

Lu Zhuang Gong believed that it was necessary to disrupt the war plans of the Song people. In February, the Duke of Lu Zhuang quietly crossed the border with a light army, launched a surprise attack and destroyed the fortresses.

Lu's actions caused a great backlash from the Song people. Sixty kilometers north-west of Qufu, there is a city called "Su"; The accommodation was the thoroughfare of the Song, Lu and Qi kingdoms, and it still belonged to the vassal of the Eastern Zhou Dynasty at this time. In a fit of rage, Song Min Gong went out to occupy Suyi, threatening Qufu from afar.

In order to consolidate the unification of Suqian, the Song people forcibly moved the locals away (the end point of the migration is today's Suqian, Jiangsu), and at the same time recruited a group of Song people to enrich the place. Because of the behind-the-scenes support of the Qi state, the Eastern Zhou royal family was helpless against the aggression of the Song people, and the Lu people felt a sharp increase in security pressure.

Duke Huan of Qi contacted the Song State to prepare for revenge against the Lu State. In the summer and June, the Qi and Song armies marched towards Qufu respectively, and the two armies were stationed near Langdi (as mentioned earlier, Lang was the western gate of Qufu). The two armies were separated by thirty miles, with the Qi division stationed in the north and the Song division stationed in the south near Chengqiu.

In recent years, the Song State had been peaceful at home, and rarely fought with foreign countries, and the army was negligent in training, and its style was free and loose. The Song army relied on the strong power of friendly forces and did not build well-established fortifications; People set up wherever they went, and the distribution of camps and battle flags was chaotic.

Lu Zhuanggong has an uncle named Gongziyan, who is a veteran soldier with rich combat experience. Childe Yan led a scout team out to reconnoitre, and soon discovered the enemy's weak points. He came back and said to Lu Zhuanggong: "The Song army is untidy and negligent in its precautions, and if it launches a surprise attack, it will definitely be defeated; The Song army was defeated, and the Qi army could not be left alone. ”

However, Lu Zhuanggong was already considering the issue of peace negotiation at this time, because the people of Qi would never endure the humiliation of another defeat, and the two countries would never remain hostile for a long time. Lu Zhuanggong believed that he should make some concessions before the relations between the two countries deteriorated in general, after all, Qi Huangong was still his uncle.

Therefore, Lu Zhuang categorically rejected his uncle's proposal, saying that he should wait for the other party's envoy to send a war letter, and that it was not a legitimate act in accordance with the "Zhou Li" to fight without telling him - he forgot that he had just attacked the fortress of the Song people in the spring.

Childe came out indignantly, and the sense of honor of the soldier made him dare to do things that disobeyed his orders. He gathered his subordinates together and said, "The enemy army has approached the capital, and the country is in danger!" Soldiers should die in battle, how can they wait for the enemy to surrender! You are all the old man's subordinates, and the old man decided to attack the Song army, and if the Song army is defeated, the country will be preserved. Today may be the last battle of my life, only to kill the enemy, not to protect myself! May the spirit of Zhou Gong and Bo Bird in the sky bless the country of Lu! ”

Gongziyan collected dozens of tiger skins, and the warriors put tiger skins on the backs of war horses; Then Gongzi Yan led this small number of death squads from the gate to the west of the capital and went straight to the camp of the Song army.

Lu Zhuanggong was shocked by the news, he was shocked by his uncle's heroic actions, so he said: "If something happens to my uncle, it is a widow who kills my uncle!" He immediately gathered his army and chased after Gongziyan.

At this time, Gongzi Yanbu had already broken into the outlying camp of the Song army. When the Song people's war horses saw the enemy galloping towards them in a tiger chariot, they scattered in all directions. The Song people were unable to organize an effective defense for a while and were relentlessly hunted down, and panic began to spread. However, the Song soon discovered that the death squad was too small in number, so they regained their courage, gradually took control of the situation, and began to fight back.

Gongzi Yan had already made up his mind to die without returning, but he suddenly saw smoke and dust rising from the direction of Lu Guo, and knew that reinforcements were coming. Gongziyan changed his original mind in an instant, and he decided to lure the enemy out of the barracks and make the Song army fight the Lu army in the field.

Gongziyan immediately ordered a retreat, and the Song people chased after him. The Song army's pursuit was spontaneous and disorderly, while the reinforcements led by Lu Zhuanggong were well-groomed and orderly.

The two armies soon engaged in a contact battle, and the pursuers were routed because they could not form an array in time, and the Lu army stepped over the corpses of the enemy and continued to advance. But the main forces of the Song army began to assemble opposite the Lu army. Because of the hasty attack, the Lu army was very poorly prepared and was at a disadvantage in numbers; Although Gongzi Yan returned to the large army safely, the entire large army was in danger.

Lu Zhuanggong decided to fight to the death, he ordered the main force to form a dense defensive formation, and gave the command to Qingfu; He led an elite army to attack Song Mingong's guards.

This risky plan disrupted the deployment of the Song army, and the Song people hurriedly mobilized troops to protect Song Mingong. The enemy strengthened the defense, and Lu Zhuanggong's attack became more and more difficult; Qingfu sent part of his army to support Zhuang Gong, and the enemy also increased his troops; So the main battlefield gradually shifted around the two monarchs. Once the battle was stalemate, the numerical disadvantage of the Lu army began to appear, and the Lu army was defeated in many battle points, and the Song army gradually completed the encirclement of the enemy.

There was a famous warrior named Nangong Wan in the Song Kingdom, and he and his subordinates always acted as a forward when attacking and a guard when retreating. Nangong Wan desperately wanted to break the defense line of the Lu army at this time and capture Lu Zhuanggong, but the people of Lu were afraid of his ferocity and did not dare to confront him head-on.

Nangong Wan threw a spear and hit Lu Zhuanggong's war horse, the war horse was suddenly frightened, kicked and jumped, the chariot shook from side to side, and finally fell to the ground and fell apart, and Lu Zhuanggong was also thrown out - since the battle of dry time, he has lost the chariot for the second time. Nangong Wan shouted: "Lu Hou has crashed!" Go get him! The Song people cheered loudly, and the attack became more violent.