Imjin war outbroken by structural paradox of Hideyoshi regime had a characteristic that war had to be continued until the paradox is solved. Invasion, also, related with the peace and power of Hideyoshi regime. The paradox of regime is phrased as an unrest of commanding and internal conflict of Japanese military. The peace and power of Hideyoshi regime is highly related with conditions of pacification.
Bargaining between Chosun and Tsushima before the invasion was only had an intention to dispacth of diplomat(Tong-sin-sa) and it was far from idea of Hideyoshi. In addition, Chosun wanted to get cause of negotiation rather than grasp the meaning of bargaining. In other side, Hideyoshi required passage for invasion to Ming dynasty. This ended Chosun-Japan relationship and triggered Invasion in 1592.
Connected with it"s east-asia strategy, Ming sent troops to Chosun and it was ultimately aimed at block the invasion of Japan in Korea Peninsula. Thus, Bargaings of Chosun-Japan and Ming-Japan in Imjin war time were peace treaty without peace significantly related with contemporary warfare.
Theme of yip-cho and the cession of Chosun"s four province were unchanged while the logic of Chosun-Japan treaty changed along with the alteration of war state. Japan, also, wanted to separate the negotiation with Chosun and Ming. With this rule, Japan pressed Chosun with result of Ming-Japan treaty. On the other side, Ming forced Chosun to sign the mutual agreement with Japan for the purpose of withdraw the Japanese military in Korea Peninsula and longed for investiture of Japan. It is good to evaluate that negotiation between
Ming and Japan was effective in terms of stopping the battle temporarily. Though, It was not enough for the end of war. In other words, It was not suitable for strategy that aims at sustaining an international order among three east-asian countries while casting a long shadow to Ming"s east-asia strategy. Additionally, Chosun had no choice but to led by Ming because the dynasty limited Chosun"s right to command and diplomatic power.
In the end, negotiation of Chosun-Ming, Chosun-Japan resulted in failure coincide with Hideyoshi"s investiture by Ming dynasty. Therefore, Jungyu war(1597) began. In this time, there were widespread concerns of war in Japan and with Ming"s deeper in, Japan devoted itself to defend against Ming stationed at south coast retreated. The commader of Japan also gave much effort to disengage the troops by the peace treaty after Hideyoshi"s death.
Generals were positive to withdrawal negotiation, Chosun had no means to deal with. Since this 7-years long Imjin war triggered by paradox of structure of Hideyoshi regime=daimyo coalition government, Chosun-Japan relation diplomacy get settled down after Tokugawa Ieyasu got overwhelming military power over Daimyo resulted from winning in Sekigihara battle.