In 685BC, during the Spring and Autumn Period of the Eastern Zhou Dynasty (in simplified Chinese 東周春秋時期), Chai Woon Noble got the power of the Chai land and he adopted Guan Zhong to be the chief officer. Guan, and of course, Chai Woon Noble also, were very wise and they knew the need of the people in the land, and they therefore implemented a lot of great policies which change the land. For example, they refined the tax system so that the tax rate would be judged according to the fertility of the farmland of the people. Besides, they reformed the monetary system of the land and integrated the military and farming industry so that farmers would also be trained to be soldiers.

The above reforms greatly increased the wealth of the land and gradually, the Chai land became a little country and the wealth of it is even comparable with the Zhou government. Later, Chai Woon Noble started the war against the Cho group, saying that they were not respecting the Zhou government. They got the victory and the Cho group needed to give more money to the Zhou government. As a result, after the war, Chai Woon Noble established the system of the hegemony and he became the first great leaders of this system and the power was quite great. At this moment, what the Zhou government could do was just to accept the position of the Chai noble, hoping that they would not be the target of the Chai group so that there would still be some little respect given to them.

After the death of Chai Woon Noble, his five sons warred against each other to get the power. Therefore, this little country deceased in power due to the civil war. At this time, the Cho group rose in power and conquered many little places and grew into another new little country. On the other hand, the Song Group also grew in power. As a result, the both little countries warred against each other. Finally, the Cho group got the victory and established it position in China.