After the end of the Confederacy, King Cheng of Chu sent envoys to Xinzheng to denounce Zheng Wengong for reneging on his covenant with Chu. Zheng Wengong is the brother-in-law of King Cheng of Chu, and he is still attached to Chu in his bones. Zheng Wengong took this opportunity to abandon his agreement with the Jin State and continue to serve the Chu State.

Zheng Wengong's perfidy angered the Jin people. But for the piece of meat that is not steamed and cooked, Jin Wengong didn't know what to do with him, he said: "Zheng Jie is capricious, he rebelled against Qi, betrayed Chu, participated in the alliance of practicing the land and betrayed the covenant. The Jin State can't destroy Zheng, what should the widow do to control the Zheng State in his hands? ”

Hu Yan said: "A few years ago, Prince Zheng failed to make a rebellion, and Uncle Zheng killed the prince and expelled the princes. Zheng Guo's current situation is similar to that of the late period of the emperor's dedication. Uncle Zheng has a son named Gongzilan, who is known as a virtuous person, and is now in our country. Chen thought that it was better to follow the example of the Qin people and send Gongzilan back to Zheng. Gongzi Lan obtained the throne, which could ensure that Zheng Guo was personally attached to our country during his reign. ”

Jin Wengong nodded frequently, and the plan was set. However, the Jin people believed that they could not achieve their goals on their own, and they did not trust the princes of the Central Plains (especially those surnamed Ji), so the Duke of Wen of Jin sent an envoy to the Qin State and invited the Duke of Qin Mu to attack Zheng together.

Regarding Jin Wengong's proposal, the Qin people had different opinions. Many doctors thought that the Jin people were rude and insatiable, and that they would do anything to seize personal gains, and that they should refuse the Jin people's requests. Qin Mugong, who had a good temperament, finally overcame public opinion and personally led the army to the battle.

On September 10, the 30th year of Lu Xigong, the Qin-Jin coalition army arrived on the outskirts of Xinzheng. The Jin army was stationed in Hanling in the north, and the Qin army was stationed in Pannan in the east.

The Zheng people believed that the reason why the Jin people abandoned the allies of the Soil Alliance and instead united with the Qin people outside the alliance to invade was to show the Zheng people their determination to win. Faced with a powerful enemy with high morale, Zheng Guo was defeated only in the day; It is no longer possible to defeat the opponent by force alone, and the only way to find a breakthrough is to look for a breakthrough in diplomacy.

Zheng people can't hold out. The doctor Yi Zhihu said to Zheng Wengong: "There is an old master named 'Wu' in Candleyi, and he is the best and most persuasive person I have ever met. If he is sent to see Uncle Qin, he may be able to persuade Uncle Qin to quit. ”

Zheng Wengong immediately summoned Candle Zhiwu and asked him to send an envoy to Qin. Candle Zhiwu said: "Even if the minister was an official when he was young, his ability was not as good as others; Now that I'm old, I don't have any ability. ”

Zheng Wengong said: "It is the fault of the widow that he failed to appoint you early, but only remembered you at the moment of emergency. But please do not resent the widow; If Zheng Guo perishes, the result will also be unfavorable to you. ”

Candle Warrior didn't dare to refuse, he climbed the tower and retracted into a hanging basket, and the soldiers took advantage of the night to lower the hanging basket on the wall. Candle Zhiwu was deliberately discovered by the patrolling Qin army on the way, and then was brought to Qin Mugong.

Candle Zhiwu said: "Qin and Jin besieged Zheng State, and Zheng people knew very well that the end of the country was imminent. If the demise of Zheng Guo can be beneficial to Qin State, foreign ministers will not dare to come here to nag. But isn't it too difficult for the Qin State to treat the land of the Zheng State as a border town across the Jin State? Since it was too difficult, he could only give the land to the Jin Kingdom. What good would it do to the Qin State by destroying the Zheng State to strengthen the Jin State?

"You know best what virtues the Jin people have, they became fat by devouring their brothers with the same surname: the Quwo people eliminated the Jiang regime, the Jin Xiangong destroyed the Hedong and Hanoi Zhuji, the Jin Huigong, Huaigong and Chong'er couldn't even accommodate their own brothers, and the current Jin Marquis destroyed two more brother countries before the Battle of Chengpu, and wanted to use the next three indiscriminate means to get rid of Wei Zheng.

"How can the Marquis of Jin love Qin if he doesn't love his brother? When the prince led a rebellion, the Jin people prevented the Qin army from crossing the river to save the trouble, and robbed the reputation of the Kuangzheng royal family that should belong to the Qin State, do the Jin people love the Qin people? The Marquis of Jin married five princesses of the Qin State and gave birth to many sons with them, but he set up the son of a lowly concubine of a small country as the prince, does the Marquis of Jin love Qin Jun?

"Besides, you have also received the 'gift' of the Jin Jun, before Chong'er ascended the throne, he promised to cede Jiao and Fang to the Qin State, but he crossed the river in the morning and began to strengthen the walls of the two cities in the evening, which is really stingy and greedy! The Jin state annexed the Zheng state to the east and would also expand westward; If you don't attack Qin, how can you get the land west of Hexi?

"So, please forgive Zheng Guo! If Jun Bo regarded Zheng Guo as a hospitable host, providing supplies and hospitality for the Qin State Mission's business travel, our country would gladly accept it, what harm would that do to Qin State? Whether you want to harm Qin Yili Jin or not, please decide for yourself. ”

Qin Mugong invited Candle Zhiwu to rest in the side tent, and then asked the doctors for advice.

The doctors unexpectedly agreed to form an alliance with Zheng Guo. Baili Xi said: "The Qin and Jin countries were built between the rivers, just like Qilu and Song Zheng, who were born enemies. No matter who ascends to the throne of the Jin State, it is a problem for the Qin State: the mediocre monarch directly harms the Qin State, and the virtuous monarch indirectly hits the Qin State.

"So Candle Wu is right, for every point that the Jin State grows, the Qin State weakens by one point. The Jin State now focused its energy on the East, and once the Jin people settled the East, they would drive their chariots to Hexi. It is better to create obstacles and trap the Jin state in the east, so as to protect our country from invasion. ”

Qin Mugong said: "If the widow abandons the oath with the Marquis of Jin, it will be an enmity against the Jin State." ”

Uncle Jian said: "Qin and Jin are originally opposed to each other, so they can't talk about opposing each other. When Jun Bo summoned Chong'er from Qi State and set up him as the Marquis of Jin, it was just because Zi Yu's kid betrayed the Qin State. If he can bow down to Jun Bo, where can it be Chong'er's turn to take the throne? The people of the Jin people knew this well, and they regarded the accession of the Marquis of Jin as an arrangement from heaven, without mentioning the favor of the king.

"So, the monarchs and doctors of the Jin Kingdom have no feelings for the Qin people at all, and they know very well that if we can find a deaf and depraved monarch, they will not support Chong'er. The relationship between the Qin and Jin dynasties was one of mutual use and mutual demolition. Even if Chong'er is a saint and has been kind to Qin all his life, who can guarantee that his descendants will be like him? When a huge war machine falls into the hands of a tyrant, there will be no peace in the Qin State! ”

Qin Mugong couldn't help nodding frequently, he summoned Candle Zhiwu, allowed Zheng Guo to sue for peace, and held a bloody ceremony with Candle Zhiwu. In order to completely break up the Qin-Jin alliance, Candle Zhiwu asked the Qin people to send troops to help the Zheng people defend the capital.

Qin Mugong ordered Qizi, Fengsun, and Yangsun to lead an elite army into Xinzheng. This move shows that the Qin people not only recognized the true face of the Jin State, but also did not hesitate to make enemies of the Jin State in the treatment of the Zheng State.

Then, the Qin people suddenly withdrew their troops without informing the Jin people. The Jin people were shocked, but they figured out the reason later.