background
In the middle of the Spring and Autumn Period, after Qi Huangong's death, Qi lost the power to continue to rule because of civil strife. The princes of the Central Plains also fell into a leaderless situation. The powerful Chu State took the opportunity to expand its influence in the Yellow River basin, and successively controlled small and medium-sized vassal States such as Zheng, Chen, Sui, Lu, Cai, Cao, Wei and Xu, defeated the Song State which attempted to dominate, and was likely to enter the Central Plains. At that time, in addition to Chu, there were Qi in the east, Qin in the west and Jin in the north, which were several powerful countries. However, Qi has no power to compete for hegemony; But Qin is in the west, and Fang is committed to expanding his power to the west, so he has no time to take care of it. Therefore, only Jin can shoulder the heavy responsibility of preventing Chu from dominating the Central Plains. After the painstaking efforts of Emperor Wu of Jin and his son, the State of Jin annexed the Central and South countries in Shanxi, strengthened its strength and occupied the triangle of Shaanxi, Shanxi and Henan, thus stepping out of the closed zone, laying the foundation for Ding to participate in political and military activities in the Central Plains. Seventeen years, 19 years in exile. After many hardships, the son of Jin returned to China to succeed to the throne, ending the chaotic situation of a group of sons vying for power and profit.
process
Jin Wengong appointed talented Zhao Shuai, Hu Yan, Xian Zhen and others, and established a hegemonic policy of improving politics at home, enriching Qiang Bing, respecting the king abroad, contacting Chyi Chin and restraining Jingchu. To this end, Jin Wengong changed the official system and established the system of officials appointed by the monarch, so as to recruit talents, weaken the power of the public, open up farmland, build water conservancy projects, and neglect agricultural businesses, resulting in a situation in which the factory "makes officials rich and poor, and makes poor use of money". In the spring of the eighteenth year, he personally led the troops to quell the chaos led by Zhou Tianzi (see the chaos led by Zhou Tianzi), which greatly increased Jin's prestige among the princes, and thus obtained the strategic position of four cities: literature, yuan and praise from King Xiang of Zhou. In the autumn of the same year, Jin sent troops to the south to help Qin attack the princes of Chu to show his friendship with Qin and induce Qin to go south to fight against Chu, killing two birds with one stone. For Qi in the East, Chu can only echo each other politically because of the separation of Jin and Qi. The rapid rise of the Jin Dynasty caused the Song State to rebel from Chu to Jin in the autumn of nineteen years, which led to a change in the power balance between Jin and Chu in this area. In the winter of 20 years, he led Chu, Zheng, Cai and Xu to besiege Shangqiu, the capital of the Song Dynasty, in an attempt to conquer the Song State and then dominate the Central Plains. Song Chenggong sent an emissary to Jin for help. Jin Wengong listened to the minister's suggestion and decided to take this opportunity to attack the forces of Chu and monopolize the Central Plains. Therefore, Jin Wengong expanded the Second Army into the Third Army, selected outstanding generals and actively prepared for the war.
result
2/kloc-from the beginning of the 20th century to April of the same year, Jin Wengong personally led the Jin army to use the diplomatic strategy of uniting Qi, Qin, Cao and Wei, and the strategy of avoiding the enemy's sharp edge and luring the enemy in depth, which hit the Chu army hard in the decisive battle of Chengpu and won a decisive victory for the Central Plains (see the Battle of Chengpu). In May, Jin Wengong called the kings of Qi, Song, Lu, Cai, Zheng, Wei, Ju and Chen to hold an alliance meeting in (now southwest of Yuanyang, Henan). King Xiang of Zhou also personally attended the ceremony, conferring Jin Wengong as Hou Bo, ruling the vassal.
evaluate
In this war, Jin Wengong made a series of strategies to enrich the people by knowing people well and accepting wise men. He listened to the minister's advice and was good at catching fighters, which dealt a heavy blow to the forces of Chu and dominated the Central Plains. At this point, after four years of succession, Jin Wengong finally ascended the throne of the Central Plains overlord. Chu's army was forced to temporarily retreat to the south of Huaihe River.