In September of the same year, the Liao army led an army of 200,000 to attack south, at which time the traitor Wang Qinruo proposed to move the capital and suggested fleeing. Kou Zhun said that the person who proposed to move the capital could be killed, so Wang Qinruo hated him to the core.

Later, Kou Zhun suggested that Zhenzong should be allowed to drive the expedition in person, and Zhenzong was timid. In October, the Liao soldiers captured Qizhou and continued to the south, and the cowardly Song Zhenzong was finally willing to drive the personal expedition under the persuasion of Kou Zhun, but Song Zhenzong repeatedly retreated on the way to the pro-expedition, but Kou Zhun insisted on letting Zhenzong personally conquer.

Song Zhenzong originally had no determination to resist the enemy, so he negotiated with the Liao army, and the Liao army asked the Song side to return the "Guannan Land" occupied by the Great Song Dynasty, but the Song side did not agree, and was willing to give the Liao army some economic compensation, and the negotiations were carried out in the confrontation between the two armies, and finally an agreement was reached according to the conditions of the Song side. So Song Zhenzong sent Cao Yu to negotiate the amount of silver silk with the Liao army, Song Zhenzong said to Cao Yu: "As a last resort, one million is fine", and Kou Zhun said to Cao Yu privately, "If the silver silk exceeds 300,000, don't come back." As a result, the negotiations ended, and the Song Dynasty gave 100,000 taels of silver and 200,000 horses of silk every year, which was the famous "Yuanyuan Alliance" in history.

After the alliance of the Yuanyuan, the Liao State no longer launched a war, and Kou Zhun was as kind to the Northern Song Dynasty, but the meritorious man did not end well.

After Song Zhenzong returned to the palace with his own expedition, Wang Qinruo began to plot to bring down Kou Zhun, he said: "The Alliance of the Yuanyuan is actually the alliance under the city, how can Your Majesty think that Kou Zhun is meritorious, don't you think it's a shame?" When Zhenzong heard this, he began to feel uncomfortable again, so he began to be cold to Kou Zhun.

Under the repeated attacks of the traitor Wang Qinruo, Kou Zhun was demoted again and relegated to Shaanzhou to be the governor.

Song Zhenzong was bedridden in his later years, and obeyed Wang Qinruo and Ding Wei, who were good at sycophants, but Ding Wei wanted to win over Kou Ling for his own use, so he asked Zhenzong to return to the court as a minister, and Kou Zhun's disciples saw through Ding Wei's conspiracy and persuaded him not to go, but he did not listen to enter Beijing again.

After entering Beijing, Ding Wei began to woo Kou Zhun as a fellow party, and at a banquet, Ding Wei wiped his beard with some vegetable soup for him, and was reprimanded by Kou Zhun on the spot, so Ding Wei became angry and swore revenge.

After Song Zhenzong fell ill, Empress Liu was in charge of the affairs of the court, and Empress Liu asked Ding Wei about everything. So Kou Zhun, Wang Dan, and Xiang Min played Zhenzong, opposed Empress Liu's interference in politics, Ding Wei dictatorship, asked the prince to supervise the country, and assisted the prince with Yang Yi, which was approved by Zhenzong.

Empress Liu's mother's family broke the law, Song Zhenzong issued an edict to pardon, Kou Zhun resolutely objected, thinking that it must be dealt with in accordance with the law, so Kou Zhun and Empress Liu according to the "History of the Song Dynasty: The Biography of Kou Zhun",

Kou Zhun was demoted, it is said that Zhenzong did not know because he was sick in bed, and asked the people around him where Kou Zhun was, because he was afraid of Ding Wei, no one dared to tell the truth, everyone was afraid of Ding Wei, and even on the day Kou Zhun left Beijing, no one went to see him off. After Kou Zhun was demoted, Ding Wei became the prime minister as he wished, and in order to take revenge on Kou Zhun, he demoted him again and again.

In 1041 AD, that is, the nineteenth year of Renzong, in order to try the case of Qin Xianglian, Renzong once again enabled Kou Zhun as the prime minister, but this year, which has just begun, the Empress Dowager Liu made trouble again, or in the name of rebellion, arrested Kou Zhun's whole family, and wanted to destroy his whole family, according to historical records, Guanzhun finally died in Leizhou, and now no one in the court can excuse him, in desperation, the four had to turn to Yangjiazhai for help.

The above are all political history, wild history, opera, legends and other records of Kou Zhun, inconsistencies, inconsistencies, inconsistencies, and those who do not understand the writing,,, but Yang Jiulang thought about it, "In any case, although Kou Zhun is a little loyal, but after all, he must also think about the common people in the world, and the thinking of the ancients is ,,,", Yang Jiulang thought to himself, "Hey, even if you are in this era, forget it, then stretch out your hand and make a bang!"