The scholar didn't defend Yue Fei, so why didn't Yue Jiajun come forward to rescue him? The first reason is Yue Fei's concept of loyalty to the country, telling his "Yue Jiajun" not to act rashly. When he was asked to move troops back to Chaoxian, Yue Fei not only took away his son-in-law Zhang Xi 'an and his son Yue Yun, but also confessed his subordinates without moving them. Because Zhang Xian, Yue Yun and others followed Yue Fei back to the court of the Southern Song Dynasty, Yue Jiajun fell into a leaderless situation. And for Yue Fei, asking Yue Jiajun not to act rashly is also to protect his behavior. Because if "Yue Jiajun" acts without authorization, it will naturally be punished as rebellion against the imperial court, and more people will be killed then. After Yue Fei returned to the imperial court, he was not immediately detained in prison, which is also an important reason why Yue Jiajun did not act without authorization.
After Zhao Kuangyin acceded to the throne, he suppressed the military commanders by releasing the relieving power through a glass of wine, and he was wary of the military commanders for thousands of times. Under the strict guard of the imperial court, it was difficult for Yue Jiajun to rescue Yue Fei and even rebel. Take the army of the Northern Expedition in the Southern Song Dynasty as an example. Other troops do not unite with Yue Jiajun. If Yue Jiajun really refuses to rescue Yue Fei, he is likely to be besieged by troops around him. More crucially, when Yue Fei was killed, Yue Jiajun was nominally named Yue, but when Yue Fei was in office, he had only command and no ownership of this unit.
The control of the army in Song Dynasty was very strict, and the ancient legal system was relatively perfect. The evidence of Yue Fei's rebellion is conclusive, and the crime of fearing the enemy is irrefutable. It is normal that no one will rebel for such a criminal. Yue Jiajun is called Yue Jiajun, but in fact he is loyal to the court. Yue Fei's verdict was examined by Dali Temple, and Gao Zongqin died. The evidence chain is complete and uncontroversial. Therefore, Yue Fei's death is something that everyone can't do.