Entering the era of the Warring States, the prosperous land of the Central Plains, the south of the Shangqiu City of the Song Kingdom, there was a small city called Fengze, where the water and grass were lush, the lakes were dense, and the birds and animals walked through it, which belonged to the land of the Song Kingdom at that time. In the summer of 343 BC, the monarchs of the thirteen princely states met here to meet the Zhou Tianzi. Taking the lead was a large country of Wei, and King Hui of Wei hoped that with the help of this alliance, he would be able to establish his hegemonic position, this alliance was not too lively, most of them were small states in the vicinity, and Shang Martin once said to King Hui of Wei: "The twelve princes of the Great King, not Song and Wei, zou, Lu, Chen, and Cai." "
Almost thirty years before this alliance was held, more than four hundred kilometers away from Shangqiu in Linzi City, Tian Wu of the State of Qi killed his brother Qi Gong Tian Andi and established himself as a king, that is, the second quite accomplished Duke Huan of Qi in the history of the State of Qi. This palace coup not only changed the situation of the State of Qi, but also broke the balance of power among the princes, and the powerful states of Wei Zhao and other countries were suppressed by large troops, while weak countries such as Wei Lu and other countries also plundered their territories, and the hegemony of the State of Qi was seriously threatened. In the following twenty years, the core military strength of the State of Qi mainly fought several wars with the State of Wei, and the Duke of Qi Huan reused the Ghost Valley Gate man Sun Zhen, and after the Battle of Guiling, the Qi army defeated Wei Wupao, gradually changing the unfavorable situation of being subject to people.
For King Hui of Wei, the so-called "hegemony is only three generations" spell has always haunted his mind like a nightmare, although the State of Wei has lost the war of hegemony with the State of Qi, but the national strength of the State of Wei has not been completely destroyed. Therefore, while strengthening the military strength, King Hui of Wei developed the domestic economy, vigorously repaired the domestic road traffic, and also excavated the surrounding irrigation water system, and several water diversion projects were continuously expanded, connecting the Huai River, Yingshui and other rivers, opening up the Yellow River and the Huai River system, of which there was a canal leading to Yingshui that passed through Fengze, and this canal also connected Wei, Qi, Song, Lu and other countries, during which the Wei forces and vassal forces deployed became an important carrier for the eastern expansion of the Wei state.
The importance of this small city of Fengze is extraordinary, and King Hui of Wei has given great support to the economy of this area, the so-called "abolition of the taboo to give the people", that is, the wealth around Fengze that is under the control of the state is open to ordinary people to reclaim and use, which provides more space and possibilities for the survival of the people. Although Fengze City belonged to the Song Dynasty, its economic and demographic development highlighted the magnificent achievements of the Wei State in digging canals through the nations. Therefore, King Hui of Wei chose to hold a meeting of princes here, and also invited Zhou Tianzi to roam over this place, that is, to tell the princes of the Central Plains at that time that even if the State of Wei lost in the battle with the State of Qi, the State of Wei was the pure hegemon that all the princes should recognize, and the princes along the canal in Fengze should still surround the State of Wei as the political center, making enemies of the State of Qi and enemies of the State of Chu.
Therefore, Fengze City is only the beginning, and this alliance of King Hui of Wei must be huge, in addition to King Hui of Fengze, he must also take Zhou Tianzi and the princes to swim on the canal, and even go straight to Mengjin, where the King of Zhou Wu will be in the alliance of eight hundred princes, which can be described as the ambition is already obvious. In the first few years before King Hui of Wei ascended the throne, the Qi people used to collect tribute to the small princely states around Fengze City, similar to collecting protection fees. King Hui of Wei held an alliance at Fengze City, where the Song Dynasty was located, for the obvious purpose. In the Spring and Autumn Period and the Warring States Period, if the presiding officer held an alliance in another country, the needs of the alliance were often borne by the princely states where they were located, and the abacus of King Hui of Wei was quite sophisticated, which showed his introverted cunning character.
The "Warring States Policy" says: "Drive the twelve princes to chao tianzi in Mengjin", the influence of this alliance is very large, even in the era of Qin Xiaogong many years later, there is also the matter of "Qin envoys led by the young officials to meet the princes fengze, chao tianzi", indicating that the grand situation of the Wei Huiwang alliance has become the talk of the princes after tea and dinner, and has become the dream of the royal children.