When Qin Shihuang started the engine of unifying the Central Plains, the only one among the six countries that could compete with Qin was Zhao. Since King Wuling of Zhao carried out the military reform of "Khufu riding and shooting" in 306 BC, the national situation has been very prosperous. With the effective growth of its own military strength, Zhao basically won more and lost less in foreign wars. King Wuling of Zhao personally disguised himself as an envoy to explore the terrain of Qin, with the intention of attacking Jiuyuan, bypassing Hangu Pass and destroying Qin. It can be seen that under the background of the successive decline of Qi and Chu, Zhao is not only the backbone of the six eastern countries against Qin, but also a threat to Qin's strategic security.
And Ye Zhao knew that there would be a big war between them and Qin. And this war definitely determines the final direction of the Central Plains. Later, a century war-the Battle of Changping-broke out between Qin and Zhao, which was related to the fate of their respective countries and even the whole China.
Both sides invested a lot of manpower and material resources in the battle of Changping, which can be said to be a national war. The war lasted nearly three years. Finally, Zhao's economic strength is not as good as Qin's, and countries like Qi, which have no foresight and short-sightedness, are unwilling to support Zhao's grain and grass. Zhao had to replace Lian Po, who couldn't persist, with Zhao Kuo, the main battle. Here is not the prince of Zhao deliberately embarrass Lian Po, but really don't stay up.
But in the end, everyone knows the result of switching to Zhao Kuo. Zhao Kuo was killed in this war, and Zhao's last effective force, as many as 400,000 foot soldiers, was also killed by Changping. After the battle of Changping, Zhao's national strength declined. Zhao is now an autumn grasshopper to General Leitian. Although very tired, it was no problem to destroy Zhao at this high altitude, which was also the best opportunity and choice for Qin at that time. However, it is puzzling that after the battle of Changping, why did Qin choose to reach peace talks with Zhao instead of giving up this opportunity?
According to historical records, it is the problem of Qin disharmony, saying that after the battle of Changping, Leitian intended to win and destroy Zhao. However, due to the fact that the corresponding Hou of Qin Dynasty accepted a large amount of bribes from the lobbyists of Zhao State, he was afraid that he would make great contributions after the Qin Dynasty was destroyed and would live under his command. Therefore, on the grounds of being tired late and in urgent need of rest, he requested permission for Korea and Zhao to cede territory for peace. Zhao Xiang, the king of Qin, agreed.
Han cut Yuan Yong, Zhao cut six cities for peace, and the soldiers did not fight in the first month. Tian Lei heard about it and made enemies with Fan Ju from then on. The King of Qin also believed in evil and decided to let Qin Jun rest for a year. Finally, the opportunity was missed, which led to the fiasco of the Battle of Handan.
Although the history books say so, it is not the case. Zhao Xiang, the king of Qin, is wise. In the history of China, there are many lean and wise men, but why he is so wise is obviously unreasonable. Tian Lei is a general. He knows a lot about marching and fighting, but the overall layout is still worse than that of Qin Wang. The king of Qin knew that Handan could be accomplished overnight, but the country at that time was not just Qin and Zhao.
In the battle of Changping, Qin played the famous teacher Zhao. That is, Zhao took his own Shangdang place. In the eyes of the other five countries, Qin beat Zhao to find his own place.
Therefore, I am also happy to watch the two countries fight. But if Qin wanted to destroy Zhao in Handan at that time, the situation would have changed, which would have caused panic in the other five countries.
In addition, in the battle of Changping, the state of Qin had sent all the men above 15 to join the army. If we attack Handan and destroy Zhao, these people will wake up and stab themselves a few times, then Qin will perish together with Zhao. This can be seen from the subsequent Battle of Handan. Therefore, although I wanted to have absolute strength to win Zhao at that time, I still had to ensure that my nest was not occupied. Therefore, it is the right choice not to destroy Zhao after the battle of Changping.