In the first year of Jingkang (1 126), when the nomads from Kaifeng were surrounded, Zhao Gou was appointed as the marshal of Hebei military forces, and Song Ting ordered him to lead Hebei military forces to rescue the capital, but he first moved to Daming House in Beijing and then to Dongping House to avoid the enemy. In the second year of Jingkang (1 127), on the first day of May, an army of nomads from northern China led three thousand people, including Song Huizong, Song Qinzong, the royal family and ministers, to the north, and the Northern Song Dynasty perished.

Zhao Gou survived because he didn't save the capital. In the end, he made Nanjing Yingtianfu (now Shangqiu, Henan Province) his capital, with the title of Song, which was called the Southern Song Dynasty in history. On the first day of May in the second year of Jingkang in the Northern Song Dynasty (1 127), Zhao Gou officially acceded to the throne, changed the Yuan Dynasty and established the Southern Song regime.

Extended data:

At the beginning of Southern Song Dynasty, Zhao Gou was forced to use Li Gang, an anti-Japanese faction, as prime minister, but he soon drove Li Gang away, and abandoned the Central Plains with his minions Wang Boyan and Huang Qianshan, and fled to Yangzhou from Yingtianfu (now Shangqiu, Henan).

In the second year of Jianyan (1 128), Jin Jun arrived in Shandong, and Zhao Gou appointed Liu Yu as the magistrate of Jinan. In July, Zong Ze, the general guarding Kaifeng in Tokyo, died, and Zhao Gou appointed Du Chong instead of Zongze to guard the capital of song dynasty.

In the third year of Jianyan (1 129), in February of the lunar calendar, nomadic people attacked Yangzhou. He crossed the river in chaos and went to Hangzhou via Zhenjiang Prefecture. I went to Yuezhou in October, then fled to Mingzhou, from Mingzhou to Dinghai, drifted to the sea and fled to Wenzhou. In the summer of four years (1 130), Zhao Gou returned to Shaoxing after nomads from the south.

In the tenth year of Shaoxing (1 140), Song Jun won the Golden War. Song Gaozong was worried that the generals had contributed greatly and the court's finances were exhausted, so he ordered Song Jun to transfer troops.

In the 11th year of Shaoxing (1 14 1), generals such as Yue Fei and Han Shizhong were relieved of their military power, indicating their determination to make peace with Jin. Jin, Wang Hailing and Yan Hongliang still invaded the Song Dynasty, which led Song Gaozong to make concessions to make peace.

In the thirty-second year of Shaoxing (1 162), in June, after being emperor for thirty-six years, Song Gaozong passed it on to his adopted son Zhao Shen for Song Xiaozong, claiming to be the emperor's father.

Baidu Encyclopedia-The Change of Jingkang

Baidu Encyclopedia-Zhao Gou