First of all, Zhao Gou made his own face, not the cast left by his father and brother.
Historically, the Northern Song Dynasty and the Southern Song Dynasty were not completely merged into one dynasty because the regime of the Northern Song Dynasty was destroyed by the Jin people, and the emperor and Manchu ministers were taken away. Although the regime of the Southern Song Dynasty was also established by Prince Zhao, it was not born out of the Northern Song Dynasty, but was independently founded by Kang Wang on the basis of recruiting the old army. Even if the second emperor returns to Korea, it will not have any influence on Zhao Gou's throne. In the early Southern Song Dynasty, Zhao Gou once said that he would welcome the Second Emperor back to the DPRK. Yue Fei repeatedly shouted the slogan of recovering the old capital and welcoming the Second Emperor back to Beijing. If Zhao Gou is afraid that his father and brother will come back, I'm afraid the courtiers dare not shout. Therefore, at that time, both the monarch and his subjects knew that their return was only symbolic.
Second, Zhao Gou was most worried that the Jin people set up their brother Song Qinzong as a puppet emperor in the north, which would be the most vicious move of the Jin State to control the Song Dynasty.
After the Jin people captured Kaifeng City, they knew that they could not rule the Central Plains, so they forced Zhang Bangchang to proclaim himself emperor and established a puppet regime. Zhang Bangchang refused, and Jin people wanted to cooperate with the massacre. But in the end, Zhang Bangchang, who was forced to ascend to the throne, and other Jin people left, took the imperial seal south to find Zhao Gou and returned to Kang Wang. Seeing that these civil servants in the Northern Song Dynasty were too heavily smoked and unreliable by Confucianism, the Jin people made treacherous court officials emperor and established a puppet regime. Do you think the generals of ZTE in the Southern Song Dynasty were all anti-gold? They spend too much time fighting the puppet troops, while the Jin people are watching and the Song people are fighting the Song people. How much manpower and financial resources can he save?
Zhao Gou was not so worried when he was fighting against the puppet troops. After all, Liu Yu is a traitor and I made him famous. But this Liu Yu didn't meet expectations. After eight years as emperor, he was abolished by Jin people. But Zhao Gou was in a hurry at this time. If the State of Jin makes his younger brother Song Qinzong emperor at this time, it will be a confrontation between the Southern Song Dynasty and the Northern Song Dynasty. Of course, Jin Guoli Song Qinzong is also dangerous, but he is more lethal to Zhao Gou. If you are clever on the battlefield, this loss is not impossible.