Before 1123 A.D., the general of the Liao State, the Jin Dynasty Pingzhou left Zhang Jue to Pingzhou to surrender to the Song Dynasty, the defeat and fled, just became the original Liao Yanjing of the Northern Song Dynasty Yanshan Mansion, the Jin people to privately accept the rebellion against the Jin Dynasty on the grounds of guilt, the Northern Song Dynasty Yanshan Mansion had to behead Zhang Jue, causing the Han people in the sixteen states of Yanyun to be dissatisfied. After that, the Jin State was inclined to make peace with the Song Dynasty Wanyan Agu died of illness, and his younger brother Wanyan Sheng succeeded to the throne, planning to attack the Song Dynasty, in 1125 Wanyan Zongwang and Wanyan Zonghan asked to attack the Song Dynasty on the grounds of "Zhang Jue Incident", and Wanyan Zongwang led the army from Pingzhou to attack Yanshan Mansion, and Han Minyi, the general of Yizhou in the Northern Song Dynasty, surrendered.

When the Jin soldiers invaded Zhongshan Prefecture, which was only ten days away from Tokyo, the situation became even more urgent. Huizong wanted to abandon the country and flee south. During the incident, Wu Min went to see Huizong, vigorously opposed the escape, advocated the appointment of prestigious officials, and insisted on sticking to it. Wu Min recommended Taichang Shaoqing Li Gang. Li Gang played the "Five Strategies of Imperial Rong". He also said, "The non-heir prince is not enough to attract the world's heroes", and asked Huizong to announce his abdication and "collect the hearts of the soldiers". Huizong appointed Wu Min as his subordinate and assisted the prince. The golden soldiers are getting closer and closer. Huizong was panicked and annoyed, took Cai You's hand and said, "I didn't expect Jin Ren to be like this!" As he spoke, he fell into a coma and fell in front of the bed. The ministers hurriedly poured medicine for first aid. After Huizong woke up, he asked for a pen and paper and wrote: "The crown prince can be the emperor and give the sect leader Daojun to retire to Longde Palace." ”

In the face of the internal and external difficulties of the Great Song Dynasty, the chaos of the government and the powerlessness of the court, in 1125 AD, Zhao Ji of the Song Dynasty Huizong took the initiative to give the Northern Song Dynasty throne to Zhao Huan, as the crown prince Zhao Huan had to take over the crumbling mess of the Northern Song Dynasty, after Zhao Huan ascended the throne, Zhu Lian was immediately canonized as the queen, and the identity of the mother of a country tied Zhu Lian and the Northern Song Dynasty that was about to collapse.

In December 1125, the crown prince Zhao Huan ascended the throne, changed the year name to Jingkang, and on the third day of the first month of the following year, Huizong, Cai Jing, Tong Guan and others heard that the Jin soldiers had crossed the Yellow River, and decided to flee south overnight. Huizong only took Cai You and a few servants, and in the name of "burning incense", he hurriedly escaped from Tokyo, ran to Bozhou, and fled from Bozhou to Zhenjiang to avoid trouble. Tong Guan and the palace both commanded Gao Yu to lead the Shengjie army and the Praetorian Guard, and caught up with Huizong in Sizhou, and Cai Jing also led his family to flee to Gongzhou in the name of "Hu Cong", and the anger and hatred that had been suppressed in people's hearts for a long time burst out together. The government and the opposition have exposed the crimes of Cai Jing and Tong Guan's clique, and Chen Dong, a student of Tai, wrote a letter, pointing out that Cai Jing, Wang Hao, Tong Guan, Liang Shicheng, Li Yan, and Zhu Mian were the six thieves, saying that "the six thieves have different names and the same crime", please put them to death, and "pass on the heads of the Quartet to thank the world." Qinzong was forced to depose Wang Huang. Wu Min and Li Gang asked Wang Huang to behead, and Yin Niechang of Kaifeng Mansion sent warriors to behead Wang Huang and offer it. Li Yan and Liang Shicheng died. Cai Jing and Tong Guan were demoted and exiled in Bozhou. Cai Jing died in Tanzhou on the way to exile, and the court continued to expose Tong Guan's crimes, and Qinzong had no choice but to send a supervisor to kill Tong Guan, and Zhu Mian, Cai Jing, and Cai You were all exiled. After that, the court officials discussed one after another, saying that the three were not punishable, and all three were beheaded in the penal colony. Cai Qian was also exiled, died of illness, brutally oppressed the people, slaughtered the people, and the people who were full of evil have all got the end they deserve.

The left deputy marshal of the West Road, Wanyan Zonghan, led the army to attack Taiyuan from Datong, but did not finish Yan Zongwang's success, conquered Shuozhou, broke Daizhou, and surrounded Taiyuan, but was blocked in Taiyuan. So that the military plane was delayed, until he learned that Yan Zongwang had made peace with the Song Dynasty, he stopped the army and finished Yan Zongwang's army crossed the Yellow River, and the next day captured Xiazhou to surround Bianjing, the capital of the Northern Song Dynasty. The Jin army approached the city and sent envoys to ask Prince Song and the prime minister to go to the army to negotiate peace. Li Gang asked to go, but Qinzong refused to allow it, saying that "Qing is rigid and can't go past." In addition, Li Di was sent as an envoy and Zheng Wangzhi as a deputy. Li Gang retired from the dynasty, and Qinzong secretly told Li Di and Zheng Wangzhi that he could increase the number of coins by 35 million taels, and the army silver was 35 million taels to negotiate peace, and he ordered to bring 10,000 taels of gold and wine and fruit to give to Zongwang. Zong Wang saw the Song envoy and proposed: ask for 5 million taels of gold, 50 million taels of silver, 10,000 horses of cattle and horses, and 1 million horses of silk; The Song Dynasty ceded the three towns of Taiyuan, Zhongshan and Hejian, and took the prince and the prime minister as hostages before agreeing to make peace. Li Di, Zheng Wangzhi and other echoes. Li Bangyan, Zhang Bangchang and other ministers advocated accepting them all. Li Gang argued and said: "There are too many gold coins, although the wealth of the world is not enough, let alone the capital?" The three towns of Taiyuan, Hejian and Zhongshan are the barriers of the country, how to build a country if they are cut? As for sending envoys, the governor should not go, and the prince should not go. He suggested that it be delayed, wait for the four episodes of the GI, and then discuss it. The ministers are not allowed. Qin Zong's younger brother Kang Wang Zhao Gou was in Beijing, asked for money, and said to Qin Zong: "The enemy must be pledged by the prince, and the minister is the sect's plan, how can he resign!" "The Qin Sect sent King Kang Zhao Gou as the pre-military envoy, and the prime minister Zhang Bangchang as the deputy envoy to the Jin camp.

At this time, only the East Route Army of the Jin Kingdom participated in the siege of Kaifeng. Wanyan Zonghan's Jin State West Route Army was not only stripped in Taiyuan, but also rejected Wanyan Zongwang's proposal to cut off the deployment of the Western Army (the frontier army of the Song Dynasty conquering Western Xia, which was the most elite army in the Song Dynasty at that time), so that the 100,000 Western Army led by the Seed Master Dao successfully arrived in Kaifeng, and Wanyan Zongwang passively retreated to Mengyang, a suburb northwest of Kaifeng, and camped. Some people point out that the surrender faction Li Bangyan and Li Yan were deliberately or unintentionally revealed to the spy Deng Gui in order to force the main battle faction Li Gang and the seed master to negotiate peace. After the failure of the robbery, Li Gang and Chongshidao were revoked from military power. When the Jin soldiers returned to Kaifeng City, Song Qinzong was terrified and sent an envoy to say: "I don't know what happened at first, and I will offend him." Li Bangyan also ordered Song Qinzong not to offend the Jin soldiers, and a thunderbolt gunner was executed by the head after firing a cannon. Wanyan Zongwang was repulsed by the Western army when he attacked the city again, so he stopped the attack and changed the king of Su Zhao Shu as a hostage, and the king of Kang, Zhao Gou, was able to return.

After Yan Zongwang's Jin Guodong Route Army besieged Kaifeng for the first time without success, before leaving, he sent people into the city to resign, and sent a letter of resignation, saying that it was "not not unwanted, less sorrowful, in the army, not to fulfill his wishes, I would like to send a certain and so on as a substitute for the resignation of the deputy, some less gifts, with other banners, I would like to write a speech." "When Yan Zongwang retreated, the elite Qin Feng army of the Western Army led by the younger brother of the seed master Dao drove 30,000 people to Kaifeng, Tokyo, and the seed master Dao immediately ordered him to lead his troops to follow the Jin army, and attack it halfway through, completely eliminate the half of its still on the south bank, and cripple the most elite East Route Army of the Jin State to eliminate future troubles. Li Gang also suggested using the story of the Yuan Yuan to "escort" the Jin army out of the country, and secretly told the generals to pursue them if they had the opportunity. Song Qinzong also agreed with Li Gang's ostensible suggestion and sent 100,000 troops to "escort" him tightly. However, Wu Min, Tang Ke, Geng Nanzhong and other capitulation factions finally overwhelmed the main battle faction, sent people to set up a banner on the edge of the Yellow River, and strictly ordered the army not to bypass the banner to drive the Jin army, otherwise they would all be executed.

Later, the planting master proposed a method to make up for the dead, and suggested that a large army be assembled on both sides of the Yellow River to prevent the Jin army from crossing the river again, which was a plan for the next "autumn prevention". Song Qinzong was put into practice, but was soon pressed by Wu Min, Tang Ke, Geng Nanzhong and other surrender ministers, believing that if the Jin army did not come, this huge military expense would be wasted, and refused to adopt the words of the teacher. Later, the planter became angry and became ill, so that he fell ill and died. Li Gang was transferred to Hebei and Hedong to Xuanfu envoys, did nothing, and was finally expelled to Jiangxi.

Soon, the Jin State sent Xiao Zhonggong to Song, Yelu Yu to see the army, Song Qinzong thought that these two were the original Liao nobles, can be lured to use, with wax pills sealed a letter for Xiao Zhonggong to send Yelu Yu to see, so that as an internal response, Xiao Zhonggong hurriedly ran back to Jin to see Yan Zongwang, with wax pill letters to dedicate it, Zongwang on this reason to gather the army to re-attack the Song. The second siege to Bianjing, compared with the first siege of Kaifeng, the situation of the Song Dynasty in the second siege was much more difficult.