However, at the beginning of the war, Zhao repeatedly retreated, and finally Zhao Shoujiang Lian Po retreated to Changping. Lian Po is an excellent general. He knew that this situation was bad for Zhao, so he couldn't stick to it and fought a war of attrition with Qin Jun. At this time, Qin used alienation to sow discord between the prince of Zhao and Lian Po, which eventually led to the removal of Lian Po, and then Zhao Kuo took over. Although Zhao Kuo had read The Art of War, he had no real actual combat experience, which led to the failure of the battle of Changping, and most of Zhao lost the qualification to compete with Qin. If the prince of Zhao had not been alienated by Qin, he would have appointed Lian Po as the commander-in-chief of Zhao.
I don't think the possibility of winning is very great, because Zhao, led by Lian Po at that time, was already losing again and again, and the morale of the soldiers in the army was unstable. Lian Po wanted to fight a war of attrition with Qin, but Qin, as a national force, died in the battle of Changping, so Zhao had little chance of winning. God will help him unless he can be like Liu Xiu's exorcist. Otherwise, his chances of winning are slim.
Because Qin had been reformed at that time, his system and logistics were much better than Zhao's, and the efficiency of the national army was particularly high. There will be no such operation as Zhao Guo, and there will be a change of heart. It is also because of Zhao's diplomatic blunder that no other country came to help Zhao, while Qin did a very good job in diplomacy, making friends far away and attacking near. Therefore, from all aspects, the State of Qin has completely defeated the State of Zhao. Whether or not to change the master can only last long, and the final result will not change much.