Speaking of the Spring and Autumn Five Hegemons, we are all familiar with it, after the death of the first overlord qi huangong in the Spring and Autumn period, the various princely states lost a strong leader for a time, and in the Spring and Autumn period, the southern Chu state has always been very indifferent to the authority of Zhou Tianzi, because the Chu state is remote, it does not follow the etiquette system of the Zhou Dynasty. Zhou Tianzi also conquered the State of Chu several times, but although the State of Chu was superficially submissive, the State of Chu always had the ambition to advance into the Central Plains. One of the purposes of the Duke of Qi Huan in playing the banner of "Honoring the King of Qi" was to curb the development of the power of the Chu state, so after the Duke of Qi Huan, the princely states in the Central Plains fell into a situation of no leadership.
At that time, the great power in the north was the State of Qi, and after the death of Duke Huan of Qi, the State of Qi fell into civil strife, and its national strength was not as good as before. And Zhou Tianzi also had many princely states with the same surname, such as the Jin State, which was also a very important country. King Cheng of Zhou divided his younger brother Tang Shuyu around present-day Yuncheng, Shanxi, because it was not far from the capital of the state at that time, Hojing. King Zhou Cheng sealed his brother here, and his purpose was to have his brother Gong wei Jingshi. However, the later development of the Jin State was not smooth.
There were also several turmoils within the Jin Dynasty, and the political situation within the country was also relatively turbulent. By the time of the Jin Dynasty, the political situation in the Jin state was even more chaotic, and the Jin Xiangong was very fond of Li Ji, who wanted to use the favor of the Jin Gong to make his son Xi Qi the next monarch of the Jin State.
This puts the other sons in a very dangerous position. Li Ji first framed the crown prince ShenSheng and then forced Zhong'er to flee the Jin state. Heavy Ear began a long road of exile, Heavy Ear has visited many countries, although he is also a prince of a country, but some small countries are not very polite to him.
However, Heavy Ear still received a very good reception in the Chu Kingdom, because the King of Chu saw the heavy ear's entourage and realized that heavy ear was not a simple character, so the King of Chu was very kind to Heavy Ear at the banquet. The King of Chu also sent troops to escort Chong'er to the State of Qin, and eventually returned to the State of Jin with the help of the State of Qin. However, the example of the State of Chu was still very strong, the State of Chu wanted to attack the State of Song, and the State of Song was only a small country, so the State of Song immediately asked the State of Jin for help.
At that time, the jin state was still very depressed about whether to help the Song state, but Xianxun firmly proposed to help the Song state. Subsequently, Xianxun was appointed as a lieutenant general of the Jin army, and after adopting Xianxun's strategy, the Jin army broke the Wei army and repelled the Chu general Ziyu who had hastily attacked after retreating, and finally the Jin state won the Battle of Chengpu.
Why is it said that Xianxun was a marshal-level figure? Because Xianxun had a big-picture view that others did not have, after the death of Duke Wen of Jin, the State of Qin did not come to mourn but instead went to attack the State of Zheng privately through the borders of the State of Jin. Xianxun was the first to propose to attack the Qin army. However, some people believe that the State of Qin was once benevolent to the State of Jin and should not attack the Qin army. However, Xianxun thought that the qin state's move was a rude act, so the Jin state must destroy this Qin army, and finally Xianxun led the Jin army to ambush the Qin army at Mount Kun and won a complete victory, consolidating the hegemonic position of the Jin state, and the strength of the Jin state was inseparable from the commander of the xianxun.