Chu has three favors and Jin has three grievances. There is too much resentment. How does Jin can dominate? It is better to fight as planned: on the one hand, Cao Wei and Wei are eager to restore, let them restore secretly, and take the opportunity to alienate the relationship with Chu; He imprisoned the emissary of the State of Chu and angered the State of Chu. Let's fight first. Wen was very happy and did it at once. So Cao and Wei sent people to break diplomatic relations with Chu. He was very angry and led a great army to retreat from the north to attack Jin. Wen listened to Hu Yan's advice, kept his promise with the king of Chu, and let the army retreat 90 miles, temporarily avoiding the edge of the Chu army. At the same time, in order to obtain a favorable geographical position. This is the origin of the idiom "stay out of it". Regardless of public opinion, he insisted on pursuing 8 Jin Army. The famous "Battle of Chengpu" in history began. At the beginning of April, the four armies of Jin, Qi, Qin and Song came to Chengpu, where Wei was stationed. A few days later, Kim confronted Chu in the south of the city. Under the Jin army, Xu Chen took the lead in attacking the weak right army, and the right army was defeated. At the same time, Shanxi's upper army raised fox skins, raised two flags and came back. The military chariots dragged branches, raised dust and faked the illusion of retreat. Unsurprisingly, the left-wing army was pressing hard, resulting in its own strength protruding and its flank exposed. Xian Zhen led an army to attack Chu on the way, and the fake gold quickly turned back and launched a counterattack against Chu, which was also defeated. Chu Jun suffered a fiasco, and Yu Zi immediately withdrew the defeated troops and withdrew from the battlefield. The battle of Chengpu is over. After the war, the pilgrimage emperor of Jin Wengong became a vassal of the Confederacy. Zhou was officially appointed as. Jin finally achieved the political and military goal of "seizing political power and dominating the world". Yu Zi, commander-in-chief of Chu Army, committed suicide on his way back to Chu soon. The battle of Chengpu changed the fixed mode of war since ancient times, and created a precedent of maneuvering troops and concentrating troops on the battlefield to attack the enemy. In the decisive battle, according to the deployment characteristics of the Chu army and the arrogant and underestimating characteristics of its commander-in-chief, Jin Jun adopted the tactics of avoiding the strong and attacking the weak, pretending to retreat and luring the enemy one by one, and finally won a decisive victory, making Jin the overlord of the Central Plains. Controversy: There are a few doubts in this history, so some scholars assume that the so-called tactics implemented by Jin Jun in this war may only be the result of getting lost and playing the wrong hand. There are two reasons: "Zuo Zhuan" mentioned that Jinzhong Army lost its way in this war due to strong winds, got bogged down and lost a military flag, which may be the reason why Hu Qiu raised another military flag [26]; It was mentioned that Xian Zhen had planned to withdraw its troops for some reason before or during the Chengpu campaign. It was Sun Qi, the king of Chu, who analyzed some factors that led to the failure of the Chu army, which made Xian Zhen change his mind and decide to go to war, and finally won. In the winter of 628 before adowa Qin Jun, Jin Wengong died and Duke Xiang of Jin succeeded to the throne. Qin took advantage of the opportunity of being king to send troops across the border of Jin to attack Zheng. Unexpectedly, it was discovered by Zheng on the way, so he changed his plan temporarily, destroyed the neighboring state of Jin, and then returned. Before being buried, Kim's hegemony was challenged. Faced with this situation, they decided to take the lead in defense, but both Xiang Gong and Luan Zhi believed that it was a shame for the king of national subjugation not to report that Qin sent troops to pacify the chaos and support Enshi, but to attack his own army. Xian Zhen pushed public opinion that it was polite not to mourn the monarch of a neighboring country. However, Qin did not listen to the advice of loyal ministers. Because of his insatiable greed, he took the opportunity to dispatch troops and cross the border without any excuse in an attempt to destroy Qi. Since Qin is so arrogant, there is no need to talk about Po of Jin.
Controversy: Seizing the fighter plane before Qin became powerful dealt a heavy blow to this potential enemy and frustrated Qin's strategic attempt to control Jin and advance into the Central Plains. Since then, Qin had to develop westward; At the same time, this move also intensified the contradiction between Qin Jin in advance, broke the discord between the two countries, and laid the groundwork for Qin Chu's alliance. In addition, Beirong and Di took the opportunity to invade, which eventually caused a strategic situation in which Jin was attacked on three sides. Therefore, later generations have different views on Xian Zhen's decision. The first mother pregnant with "xianggong" was Qin Mugong's daughter. She demanded that the three captured generals of Qin be released back to China, so that Qin could punish them and put them to death, lest the two countries become too antagonistic. Item agreed, and immediately released the three men. Xian Zhen came to the front of "xianggong" and asked about the prisoners of Qin. Xiang Gong told him that he had been released. Xian Zhen flew into a rage: The soldiers don't know how many enemy commanders they took away with their own efforts and lives, but they were easily pardoned in the blink of an eye because of that woman's clever words! This will damage our own achievements and increase the enemy's ambition, and the state of Jin will soon perish! Xian Zhen became more and more angry and didn't look back. He spat hard and left. A woke up and sent someone to catch up, but it was too late. Qiang Qin has crossed the river. At that time, in a rage, Xian Zhen "spurned" in front of "xianggong" regardless of rank and mouth. However, Xiang Gong did not blame Xian Zhen, and even in turn apologized to Xian Zhen for releasing prisoners of war. Xian Zhen is blaming himself more and more. In the same year, Ren attacked the State of Jin, and the State of Jin sent troops to fight. In August, Jin defeated the emperor in Hebei and captured a leader of the emperor, which was called "the Battle of Hebei" in history. After the war, Xian Zhen took off his helmet and armor and rushed into the Di Army to prepare for his death, in order to punish him for offending Xiang Gong. De returned his head to the state of Jin, looking like a living person. Xian Zhen's ambition is to die, which is the style of the ancients adhering to innocence and the embodiment of his noble spirit. After Xian Zhen's death, his son took the lead in succession and became the head coach of the State of Jin. In 596 AD, that is, less than 30 years after his death, his descendants Xianhui fled to Di State, plotted to conquer Jin State, and were finally destroyed. Since then, the Xian family has withdrawn from the political arena of the Kim family.