In the sixth year of Duke Lu Huan (BC706), Duke Qi was ready to use force against Ji Guo.

Although Ji Hou's behavior was not directly related to King Zhou Huan's crusade against Zheng Guo, Qi Xugong still put the charge of provoking the incident on his head: "Ji Hou and his ancestors are all the way, and their ancestors have been shameless informants for generations!" They used to only endanger the Qi country, but now they don't even let go of the allies of the Qi country! Ji Guo will surely become the scourge of the whole of China. Since the heart of Ji Guo is not dead, then Qi can only fight with the enemy to the end! ”

With this charge in mind, the Qi people began to widen the road to Ji and expand and strengthen the cities on the border.

Ji Hou was about to go crazy, he hurriedly ran to the country of Lu and asked Duke Lu Huan to mediate with the people of Qi on his behalf. The relationship between Qilu and Qi was in the honeymoon period at this time: Lu Huan Gong married Wen Jiang, the beloved daughter of Qi Xu, as his wife three years ago, and their first child was about to be born. This is something to celebrate for both Shandong and Qi.

Ji Hou told Lu Huan Gong that he hoped to sign a peace agreement with Qi when Qi was in a happy mood, and Lu Huan said that he was willing to help his brother-in-law with this. But the sudden outbreak of a major war made their hopes come to naught.

It turned out that at this critical moment, the Shanjung in the north suddenly invaded the Qi country on a large scale. Shanrong is entrenched in Guzhu and Lingzhi (now Lulong, Qian'an, Hebei), and is an integral part of the predecessor of the Xiongnu, composed of several tribes of all sizes. Many of the tribes of the Shan Rong lived by raiding, and those near the sea also went out to fish or rob other boats.

The Shanjung troops marched into two parts, one by land and the other by boat. Two armies went down the coastline in parallel; The waterway army went up the river from the mouth of Jishui. After crossing the Jishui, the whole army moved south along the east bank of the Jishui. During this time, Shanjung spotted a light cavalry of the Changdi people (鄋conceal) watching their movements from a short distance. The leader of Shanjung, Daliang, didn't want to make any extraneous branches, so he sent his younger brother Shaoliang to show goodwill to the Changdi people with gifts.

Changdi is a Di people distributed on the north bank of Jishui, and is called "Changren" or "Changdi" because of their huge size. After receiving the gift from Shanjung, the Changdi people returned to Jibei and no longer monitored and harassed Shanjung.

At this time, the Qi people were preparing to start a war against the Ji State, and the people built a large number of buildings, roads and cities, and did not take any precautions against Shanrong. Shan Rong caught the Qi people by surprise, and the people had to run to the nearest city to take refuge; On the one hand, the Duke of Qi organized resistance, and on the other hand, he asked for help from the Duke of Zheng Zhuang.

Zheng Zhuanggong was excited, and he said: "The merit of aiding the overlord of the yin day is greater than defeating the declining royal family!" "He immediately gathered his army and requisitioned a number of ships.

In June, ships carrying Zheng Jun down the river. After a few days of sailing, the army abandoned the boat and landed in the northwest of Linzi, which was still some distance away. The scouts came back to report that a baggage detachment from Shanjung was stationed in front, and that it was camped with its back to the Zheng army (because Shanjung was defenseless on the Jishui side). The enemy's combat units were scattered in several places and at a great distance from the baggage battalions.

After surveying the terrain, the commander of the Zheng army was Prince Hu, and he was pleasantly surprised to find that if the Zheng army had the right tactics, it could not only destroy the baggage troops of Shanjung, but also rely on the favorable terrain to ambush the enemy's rescue troops. He drew up a battle plan and then assigned the task.

Zheng's army was divided into two parts, one attacking the enemy's baggage camp, and the other part ambushing on the enemy's way back. The Zheng people attacked the baggage camp as the sun set. There were only a few soldiers in the enemy camp, and most of them were handymen and slaves. When the Zheng army attacked, it deliberately created a huge momentum, and the enemy's non-combatants were immediately terrified, rushed and scattered, and the soldiers were also so overwhelmed by the fleeing that they could not even distinguish friend from foe; Zheng's army captured the enemy camp with a single charge.

The closest to the baggage camp was the camp where the leaders of the Rong army, Daliang and Shaoliang, were located, and these two people had no idea what was going on, and they thought that the people from the north bank of Jishui had come over to rob them.

"Didn't we already send a gift to Tou, and they promised to be neutral! Why are they attacking again? Daliang asked.

"yes!" Xiao Liang said: "This gang leader Dibi, we don't have credit yet!" ”

The two commanders blew their horns and gathered their troops to march at full speed towards the baggage battalion. The Rong army marched in an orderly manner, their figures illuminated by torches and the newly rising lunar moon, and as a result, they became excellent targets for the Zheng army. When the first round of arrows from the Zheng army was fired, the Rong army was in chaos. Zheng Jun hid in the hills and dense forests; The Rong army could not see the enemy, but he was exposed.

Shanjung even suspected that he was fighting against the demons, and as a result, panic became a formidable enemy. When the Rong army could not establish a defensive formation and turned to flee, the Zheng army howled and rushed out from the shadows. They beat all the snare drums at the same time, and all of them shouted loudly, giving the Shan Rong the illusion that he was being attacked by an overwhelming enemy.

The Shanjung army soon gave up resistance and fled from all sides by night. In this battle, the Zheng army killed Daliang and Shaoliang, beheaded more than 300 people, captured a large number of soldiers, and captured countless booty; The remnants of Shanjung's troops fled back to Jibei.

The crown prince sent the enemy's head and some prisoners of war to the state of Qi. Qi Xigong was so excited, he took the hand of the prince and was unwilling to let go for a moment.

Duke Qi said: "If the prince can become the widow's son-in-law, it will be the greatest favor to the Qi country. The prince blushed and muttered something that he couldn't even hear. Later, the Duke of Qi sent an envoy to Zheng Guo and asked the Duke of Zheng Zhuang for marriage. Marriage with Qi is a beautiful thing that the princes of the world dream of, but what the people of Qi did not expect was that the prince suddenly refused the good intentions of the Duke of Qi.

Later, when analyzing the causes of this war, the Qi people believed that Shanrong was far away from the Qi State, and it should be faster and more effective for them to rob the Yan State or the Xing State. However, the goal of Shanjung's southern invasion is very intriguing, and the timing is also very intriguing; So it must be a ghost made by the Ji Guoren.

No matter how Ji Guoren denies and explains, it can't change the stubborn thinking of Qi people. But no matter what the truth is, Shan Rong really killed the people of Ji Guo this time.