Tell me about the defeated son.

According to legend, Zhao She, the general of Zhao, who is as famous as Lian Po, has made many contributions to the country. Zhao She has a son named Zhao Kuo who has also read many art books. Besides reading, he also likes to tell his guests about Sun Tzu's Art of War at home. Zhao Kuo talked about the truth of war, so the guests all praised Zhao Kuo for his mastery of the art of war and praised him as a real nothing. I don't know that little guy. He really thinks he is great and the best in the world. Even his father is not in his eyes. Many people praised him at that time, but Zhao didn't think so. He warned his son to be practical. Zhao Kuo's mother asked Zhao She why. Zhao She said: War is a major event related to the destiny of the country, and it must be treated with extreme seriousness and caution, but it is bound to be a bad thing for Zhao Kuo to take it lightly.

In 262 BC, the general of Zhao Haoqi Xiang Sect of Qin attacked Korea, occupied the Wild King (now Qinyang, Henan Province), and cut off the contact between Shangdang County (now Changzhi, Shanxi Province) and the capital of Korea. The generals of the North Korean army who occupied Shangdang were unwilling to surrender to the State of Qin. They sent messengers with maps to dedicate Shangdang to Zhao, so they sent troops to occupy Shangdang. Two years later, the State of Qin sent Wang Bi to surround the Party.

Zhao Haoqi and Cheng Xiao quickly sent Lian Po to lead more than 200,000 troops to save Shangdang. So Lian Po brought an army to Changping, and Qin also sent an army to attack Changping. Lian Po is a battle-hardened old general. He deployed troops in Changping according to the enemy's situation and prepared to fight a protracted war with Qin Jun. Despite his late provocation, Lian Po held his ground. This makes it difficult for Qin Jun, because the supply line behind Qin Jun is very long, and transportation is difficult and unsustainable. The confrontation between the two armies lasted for three years, and Qin Jun slowly showed signs of fatigue. The commander at the front saw that he was almost exhausted and had to report to the king of Qin truthfully.

Zhao Xiang, king of Qin, asked Fan Ju for advice. Fan Ju said: "To defeat Zhao, we must first ask Zhao to bring Lian Po back." Therefore, the Xiang of Qin sent a spy with his daughter to bribe the powerful minister of Zhao, and spread a lie saying, "Zhao can only serve the king with horses, and his son Zhao Kuo is braver than his father. If he were a general, he would be unstoppable. Lian Po is old and timid, and he has suffered many defeats and wars. He was forced by Qin Jun and will surrender to Qin in a few days! " Consciousness is: Lian Po is old and useless. How dare he fight with Chi? So it will only defend itself, not attack! So I fought for three years, but I haven't beaten off the Qin soldiers yet. If Zhao wants to defeat Chi, unless it is to enable the rising star Zhao Kuo. At this time, King Huiwen of Zhao died and Cheng Xiao of Zhao acceded to the throne. Cheng Xiao, the king of Zhao, had long been dissatisfied with Lian Po's policies and listened to the lies, so he replaced Lian Po and let Zhao Kuo take Lian Po's place.

At this time, Zhao She was dead, and his wife asked the prince of Zhao not to send her son to Changping. The reason is that her husband told her before his death that his son would only talk big and have no actual combat experience, and play with soldiers as children. When he talked about the art of war, he immediately became supercilious, as if he was the only one who could fight in the four seas. It doesn't matter if such people don't lead troops. Once they lead the troops, they are doomed to lose the battle. Zhao Wang didn't believe it, so Zhao Wang's mother had to ask Zhao Wang not to blame the family if her son was defeated in the future.

In 260 BC, Zhao Kuo led 200,000 troops to Changping, and Lian Po had to hand over the military flag and go home by himself. Zhao Kuo has been leading 400,000 troops, and he has completely changed Lian Po's operational policy. He gave the order that if Qin Jun attacks again, it must be attacked head-on. If the enemy is defeated, we must chase them at once and kill them all.

When Fan Ju got the news that Zhao Kuo had replaced Lian Po, he knew that his double agent had succeeded, so he secretly sent Tian Lei as a general to command Qin Jun.

Zhao Kuo is an armchair strategist and will not get cold feet. There, Tian Lei deliberately defeated several times. Zhao Kuo didn't know it was a trick, so he chased it hard. Lead Zhao to the ambush area in advance, send 25 thousand chosen men, and cut off Zhao's back road; Another 5,000 cavalry were sent to Zhao Daying, and 400,000 Zhao troops were split in two. Zhao Kuo didn't know Qin Jun's bravery, so he had to camp out and wait for reinforcements. Qin sent his troops again, cutting off Zhao's road of rescue and grain transportation.

After more than forty days, the soldiers complained bitterly and had no intention of fighting. Zhao Kuo troops want to break through the tight encirclement, but there is no food and no reinforcements outside. It's hard to tell. Finally, Qin Jun shot Zhao Kuo with an arrow. When Zhao heard that his master had been killed, he also threw down his weapon and surrendered. Zhao's 400,000 troops were wiped out. This is the famous "Battle of Changping" in history.

This period of history later gave birth to the idiom "on paper". "Bing" refers to war and military affairs. "An armchair strategist" refers to someone who talks on paper but doesn't really understand it. Now it is used to satirize people who like to talk empty talk and don't solve practical problems, or to describe a situation where empty talk can't become a reality.