The 30th year of the reign of Lu Zhuang Gong (664 BC) was the beginning of another great upheaval in the Chinese region. At that time, the Chinese princes faced the oppression of two major forces: one was the state of Chu in the south; The second is Rongdi in the north.

In the vast area from most of today's Hebei to southern Liaoning, there is a northern ethnic group known as "Shanrong"; Shanjung was mainly composed of three states: Wuzhong (present-day Jixian County), Lingzhi (present-day Qian'an County) and Guzhu (present-day Lulong County), and its members also included many tribes that did not form a state.

The mountainous area is a mix of high mountains, vast plains and hills, and a long coastline to the east. Therefore, people have a variety of lifestyles, some herding, some farming, some fishing and hunting, and their habits are not the same because they belong to the same nation, but they are very similar when they rob.

There are many rare birds and beasts in the area where Shan Rong lives, and the fur that the Central Plains people regard as treasures is an ordinary commodity in Shan Rong's eyes. They traded their furs with the Chinese and exchanged them for great wealth. People living along the coast often docked in the Laizhou area by boat to trade with the Orientals. People also do some robber work in bad times.

With the decline of the Eastern Zhou royal family and the destruction of various orders, the Rongdi in the north began to rise and constantly invaded the Chinese state.

In the Spring and Autumn Period, there were three Chinese countries north of the Yellow River, namely (northern) Yan, Xing and Wei, and Yan was the most geographically northern. The capital of the Yan Kingdom was in Jiji (southwest of present-day Beijing), and the founding monarch was the brother of King Wu of Zhou, Zhao Gongxi, and the current monarch was the Duke of Yanzhuang. The Yan Kingdom is located in a remote area and has little contact with the princes of the Central Plains, so many events that occurred in the Yan Kingdom are not recorded in historical records.

As Beirong's power continued to grow, the enemy's invasion of Yan became larger and more frequent; The Yan people were tired of coping and were forced to ask the Xing people for help; But Xing Guo was also overwhelmed by Chidi, and Duke Yanzhuang had to turn to Qi Guo to complain.

The Yan Kingdom was an important fortress for the dynasty to defend against Rongdi, and it was the first barrier to prevent the northerners from moving south. Once the Yan Kingdom was destroyed, the vast Hebei Plain was exposed to the enemy; If Shanrong and Chidi united to attack Xing and Wei, both countries would have perished (in fact, both countries were later destroyed by Chidi); At that time, Huayi will be ruled by the Yellow River, and the hinterland of the Central Plains will face the danger of being invaded by northerners at any time.

The people of Qi believed that saving Yan was to save themselves and China, and to be able to consolidate the hegemony of Qi. Duke Qi Huan readily agreed to the other party's request, and invited Duke Lu Zhuang to meet in Luji (the section of the country where Jishui flows through the country of Lu).

After Qi Huangong saw Lu Zhuanggong, he realized that the other party's health condition no longer allowed him to travel long distances. Duke Lu Huan said that he could send Father Qing to lead the army instead of him, but Duke Qi Huan still largely exempted Lu from the main obligations of the State of Lu, and only recruited a thousand archers from Duke Lu Zhuang.

Also present at the meeting were the monarchs of several small Dongyi kingdoms and the leaders of the Rongdi tribe who were close to the Qi state. Duke Huan of Qi asked Rong Di to provide cavalry and infantry, and the small country to provide miscellaneous labor and grain and grass baggage.

The state of Qi recruited two armies, led by Gao Zhuangzi, the son of Duke Huan of Qi and Gao Jie, respectively, and the Rongdi tribe provided 4,000 cavalry. Guo Yizhong was ordered to defend the country.

The Chinese and upper armies of the Qi State marched in unison, and the auxiliary troops were arranged on the sides; This dispersed formation made the army look even larger and more terrifying, and no army could set up a large enough encirclement to encompass the entire army. It is true that no army in the north is strong enough to confront this coalition, and no monarch dares to confront the coalition army head-on. After crossing the Yellow River, the coalition forces marched towards Xing.

There are many small tribes or settlements scattered across the vast land of Hebei, and the tribes close to the Chinese country are generally harmless, and those who are at medium distances often do some robbery and robbery, and the farther the distance, the greater the harm.

Qi Huan Gong treated each tribe differently according to their harmfulness: for those who were not very harmful, Qi Huan Gong required them to pay hostages and provide military supplies; Those who had long been enemies of the Chinese state were resolutely exterminated, their property was deprived, and their captives were sold into slavery.

The army advanced all the way to the north, "where the army is, thorns are growing". The Rongdi tribe either left behind the old, weak, sick, and heavy possessions and fled northward, or came to sue for peace. The coalition forces also destroyed two very strong fortresses built by Chidi around Xingguo, and rescued the Xingguo people from their helplessness. Xing was temporarily safe, and Xing Bo immediately gathered an army and followed the coalition army to the north.

Most of the Rong Di who were driven out of their homes and became refugees fled to the country of Endless Beings, and while these people strengthened their defenses, they also consumed a lot of food and living resources of the Endless People.

The Kingdom of Wuzhong was founded in the period of King Wu and Keshang. At that time, there was a Shanjung army as an auxiliary force of the Western Zhou Dynasty, which made great contributions in eliminating the Yin Shang forces, and this Shanjung was sealed by King Wu to the area of Wuzhong Mountain, and the name of the country was derived from the name of the mountain. Wuzhong is the closest to Yan Kingdom, and the degree of Wenyin is also the highest; Because it is sandwiched between the two major forces of Huayi, the country has become the object of contention between the two sides, so many times the people of Wuzhong are just forced to fall to the side of Shanjung; This also makes them less aggressive and less determined.

When the army arrived in Yan, it was the middle of winter, and this season was the least active time of the year for Shanjung. The coalition decided to stay in Yan for the time being: first, to survive the coldest days of the year; Second, Yan also sent a large number of spies and lobbyists to Wuzhong, and changes within the enemy may occur at any time; The third is that it takes time to make siege engines.

The coalition forces built several winter camps on the outskirts, and the food and livestock they received along the way were just enough to meet the needs of the army for the winter.

Before the weather warmed up, the secret envoy of the Endless Kingdom quietly arrived. It turned out that the Endless Man had set up several settlements for the refugees and provided them with a large number of necessities. However, these refugees have caused great trouble for the Wuzhi people, who often sneak into the city, or do some extortion, murder and extortion anywhere outside the city, causing panic and anxiety among the indigenous people.

Finally realizing that it was a great mistake to take in the refugees, he used persuasion, expulsion, or force to drive away some of the villains with bad deeds. Most of those who were driven away again went to Lingzhi and Guzhu.

Those two countries re-admitted the exiles. Some of them have no gratitude for the help they had given to them before, but in order to exonerate their sins, they slander the benefactor for his act of self-help. They falsely claimed that the Wuzhong were secretly negotiating with the Huaxia people, and if they could sell the lives of the refugees for a good price, the Wuzhong people would vote for the Huaxia people.

Lingzhi and Guzhu were not surprised by this, because this kind of thing had not happened before. The two monarchs later devised a plan to verify Wujizi's position: they invited Wujizi to Lingzhi to meet together to discuss how to deal with the Huaxia coalition. If there is no end to the meeting, they will act on the opportunity; If they refused to come, they would preemptively occupy the Endless Kingdom before the Qi-Yan coalition attacked.

Wu Zhongzi replied that the three parties had just met. And the battle plan has already been determined. If there is no new situation, it is better for him to stay in the country; The arrival of a large number of refugees has added a lot of troubles and burdens to Wuzhong, and the country still has to prepare for war, and he has no time to deal with other things.

The monarchs of the two countries can now finally conclude that the Endless Man has indeed betrayed the Shanjung group! So Ling Zhi and Gu Zhu began to prepare for war against Wuzhi.