Yue Yun's life history has always attracted much attention, and the traditional view is that he is Yue Fei's righteous son, but in fact, there is a hidden secret behind it. According to records, Yue Fei had a marriage in Tangyin, and his wife Liu gave birth to a son, Yue Yun. However, Yue Fei joined the army, and it was difficult for the Liu family to keep the empty house alone, so they had to remarry someone else, and Yue Ke deliberately omitted this marriage when compiling Yue Fei's family tree, causing later generations to mistakenly think that Yue Yun was Yue Fei's adopted son.
Yue Fei's righteousness and open-mindedness are shown in a letter. In 1138, he learned that his ex-wife Liu was now in his army and had remarried, but instead of blaming her, he sent someone to send him 500 yuan to help him overcome the disaster. This tolerance and benevolence are admirable, and it also shows Yue Fei's mind and demeanor.
The authorship of "Man Jianghong, Angry Hair Rushing to the Crown" has been controversial, although some scholars believe that it was written by Yue Fei, but some people doubt its authenticity. It wasn't until 1986 that the genealogy of the Zhu clan discovered in Jiangxi included a poem called "Man Jianghong and Zhu Yunzhe Shuhuai", which revealed some truths, but it is still controversial to this day.
The friendship between Yue Fei and Wang Gui is even more confusing. Wang Gui was considered Yue Fei's most trusted subordinate, but he submitted a letter of accusation after Yue Fei's misfortune, which indirectly led to Yue Fei's death. The mystery of his betrayal has not yet been revealed, and perhaps new documents or evidence will emerge in the future to unravel this historical mystery.