In the battle of Changping, Zhao was far from the opponent of Qin in strength. However, due to the strategic deadlock, Zhao fell into disaster.
In order to drag Zhao into the water, the SS of South Korea dedicated Shangdang to Zhao. If Zhao accepts it, he will directly make enemies with Qin and declare war against each other. If we don't accept it, Qin will occupy the strategic position of Shangdang, and Handan, the capital of Zhao, will be at the foot of the mountain, and the situation will be even worse. Therefore, Zhao Can can only win this hot potato.
Before and after the war, Qin was in a leading position in diplomacy. All countries are on the sidelines and do not participate in the war between Qin and Zhao. This made Zhao completely lose the hope of diplomatic peace.
In the battle, Zhao's fighting capacity is not as good as that of others, and he has been defeated repeatedly, so he can only stick to it. Food will run out. At this point, Zhao has no chance to live. Qin believes that everything is carefully arranged and Zhao must be defeated.
In this case, Zhao has only one way to break the deadlock, and that is to fight to the death with Qin and fight for both sides.
This is because among the Kanto countries, Qi Yan Dou did not participate in the war, and Zhao's only hope was to rescue from South Korea. Under the threat of Qin, these countries did not dare to save Zhao, for fear that Qin would retaliate against themselves.
When Zhao won, they remembered. They don't want to see A Qin fall, while another powerful Zhao State stands beside them. Therefore, only when Qin and Zhao both lost can these countries come out to save Zhao.
Finally, Zhao became Zhao Kuo, Zhao Kuo and a desperate battle, surrounded. At this time, Zhao Kuo made a move that surprised the monarch and subjects of Qin. He didn't surrender or collapse. He led Zhao He in the last battle.
Finally, although Qin Jun won, he was half dead. This makes other countries dare to come out and save Zhao. Finally, under the attack of the Kanto Allied Forces, Qin Jun suffered the biggest defeat in history and was beaten back to Hangu Pass for decades.
In the battle of Changping, Qin Jun's strength was not enough to destroy Zhao and suppress other countries. It will only scare other countries. Zhao Kuo saw through all this and finally let Qin's strategy go bankrupt.
Although Qin won the battle of Changping, its strategy of annexing six countries went bankrupt. Qin unified the world at least twenty years later.