If the Northern Expedition was really as smooth as everyone expected, and could recover the homeland and directly attack the Yellow Dragon, then even a fool would agree to this plan, not to mention the Song Gaozong Zhao Who had a national vendetta with the Jin Dynasty?
Zhao Zhuo disagreed, and could only explain two points:
The first is that the Southern Song Dynasty had no certainty of victory
As we all know, after the jingkang revolution, the Jin soldiers attacked the capital of the Northern Song Dynasty, the second emperor Hui Qin was taken north by the Jin people, history declared the demise of the Northern Song Dynasty, although the Northern Song Dynasty perished, but the Jin people did not have substantial control over the southern region of the Northern Song Dynasty, so they gave the Kang King Zhao the opportunity to rebuild the Song regime, and finally Zhao Zhao rebuilt the Song court in Yingtianfu, known in history as the "Southern Song Dynasty Regime".
Although the Southern Song Dynasty was established, it still did not get rid of the consistent situation of the Northern Song Dynasty being poor and weak, and its military weakness, on the contrary, it was far inferior to the Northern Song Dynasty in terms of the number of soldiers and horses and economic basis, so the Southern Song Dynasty suffered defeats in succession, and even the emperor had to run to the sea in humiliation to take refuge, and could only rely on King Kang's political influence to recruit soldiers and restore the economy in the south, and continued to mediate with the Jin army in diplomacy and military affairs, so according to hard power, the Southern Song Dynasty was far inferior to the Jin State in terms of military and national strength, and could only passively defend and resist.
By the time Yue Fei held military power, although the national strength of the Southern Song Dynasty had recovered and developed, it was still not enough to destroy the powerful Jin State, mainly based on self-defense wars, and even Yue Fei's temporary victory could not reverse the overall decline.
Moreover, the Southern Song Dynasty was also full of contradictions, the people with excessively high civil taxes and the people did not have a good life, the bureaucratic team and the frontier troops of the Emperor Lu could not come out, the composition of the local army was also various, it was possible to defect or become independent at any time, the pressure of Zhao Zhuo, the emperor, was still quite large, so it once again opened the Song-Jin peace talks, the Southern Song Dynasty was willing to bear the burden of humiliation and pay tribute to Jin, and promised not to use troops to Jin, and kill the generals sent by the main station.
The second is that after the victory of the Northern Expedition, there was no benefit to vested interest groups
Although the Northern Expedition of the Southern Song Dynasty had almost no prospect of success, if it took ten thousand steps back, if it succeeded, it would not be of any benefit to the vested interest groups in the early Southern Song Dynasty, so they would not support the Cause of the Northern Expedition.
First, because after the success, the Second Emperor Hui Qin returned to the country, and Song Qinzong was still young and powerful, and he was the legal successor, so Zhao Shuo's throne would not be guaranteed, and Zhao Zhao, the emperor, would not be willing in the first place.
Second, the bureaucracy is bound to be reshuffled, the bureaucracy of the Southern Song Dynasty is all the subjects of Song Gaozong, Song Qinzong wants to sit firmly on the throne, certainly will not reuse the power of the Gaozong period, but cultivate their own close subjects, so these vested interests of the dignitaries during the Gaozong period will not take the initiative to give up their privileges, and will certainly block the Northern Expedition War that is unknown or won.
It is known from this that the Southern Song Dynasty did not want to restore the country, but really did not have the ability to win the Jin people, the Southern Song Dynasty can rely on the mountains and rivers to prevent itself is not bad, why should it take the initiative to provoke strong enemies?