Qin State After Shang Yang's reforms, the country's strength has gradually increased, and good results have been achieved in all aspects, whether military, economic, or cultural. This made other forces unable to sit still. They were all afraid that one day Qin Dynasty would start to attack them. Finally, someone proposed that multiple countries could be united to fight against Qin Dynasty. This strategy was called joint vertical. There are also some people who are optimistic about the Qin Dynasty. They cooperate with the Qin State to fight against other countries. This is the strategy of and . Among them, Zhang Yi is the most prestigious among this group of people.
Zhang Yi analyzed the situation of various countries at that time for King Qin Hui, and came to the conclusion that among the six countries now united, the two countries of Qi and Chu are the most powerful. If you want to implement the policy of Liancheng, you must break up Qi State , The alliance with Chu State . King Qin Hui thought this plan was very good, so he followed Zhang Yi's suggestion. Zhang Yi pretended to resign from his position in Qin and defected to Chu with generous gifts.
King Chu Huai had also heard about Zhang Yi for a long time, and treated him warmly. Zhang Yi analyzed the current situation for King Chu Huai, and promised to give King Chu Huai 600 miles of Qin land, and let King Qin 's daughter marry Chu Huai The king became his concubine, and Qin and Chu became relatives. Such a promise really moved King Chu Huai's heart, and the loud congratulations to King Chu Huai from the flattering ministers around him even more dispelled King Chu Huai's thoughts. So King Huai of Chu unilaterally announced the dissolution of the alliance between Qi and Chu, and began to realize his great dream of the Spring and Autumn Period.
However, is it really as Zhang Yi said? After returning to the State of Qin, Zhang Yi pretended to have injured his leg and stayed at home. He ignored the envoy of the State of Chu for three or four months, and later simply refused to acknowledge what he said. This approach was indeed a bit unethical, but Playing right into Zhang Yi's hands. When the Chu envoy told King Chu Huai exactly what had happened, King Chu Huai rolled his eyes in anger and almost fainted. His mind was full of revenge to wash away the shame of being played with. They sent 100,000 troops to attack, but it turned out that Qin had already formed an alliance with Qi. Qin sent 100,000 troops to fight, and Qi also came to help. In the end, Chu was defeated.
Later, Zhang Yi used both kindness and power, and went to Han, Qi, Zhao, Yan and other countries to implement his strategy of alliance and horizontal cooperation, forcing many countries to submit. Zhang Yi, a political strategist, was active in the historical and political arena of the Warring States Period. He lobbied the monarchs of various countries with his words and strategies and became a unique political activist during the Warring States Period.
