The Battle of Hanzhong was when Liu Bei took the initiative to attack Hanzhong occupied by Cao Wei, when the defender of Hanzhong was Xiahou Yuan, who had a niece, who was collecting firewood outside the city of Chenxian around 200 AD, and was forcibly abducted by Zhang Fei, after which Lady Xiahou became Zhang Fei's wife, and Lady Xiahou gave birth to two daughters to Zhang Fei, both of whom later became Empress Liu Chan, that is to say, the royal bloodline of the Shu Han regime actually had the genes of the Xiahou family.
In other words, Zhang Fei was Xiahou Yuan's niece and son-in-law, and during the Battle of Hanzhong, Zhang Fei also participated in the battle, but Xiahou Yuan eventually died at the hands of Huang Zhong, and when Liu Bei fought with Xiahou Yuan in the Battle of Hanzhong, would he consider the factor that Zhang Fei and Xiahou Yuan were relatives and turn a blind eye?
Xiahou Yuan
Liu Bei certainly wouldn't consider it, and was completely uninterrupted by this.
During the Three Kingdoms period, many hostile forces married some of the sons of the clan to each other in order to temporarily marry political marriages, such as Cao Cao married his own niece to Sun Quan's younger brother Sun Kuang, that is to say, Sun Quan was the brother of Cao Cao's niece and son-in-law Sun Kuang, and at the same time Cao Cao let his son Cao Zhang marry the daughter of Sun Quan's cousin Sun Ben, so Sun Quan was actually close to Cao Cao, and the two were relatives.
However, Sun Quan and Cao Cao were relatives, affecting the war between the two families? It does not affect at all, when it is time to fight, Sun Quan and Cao Cao are unambiguous, although there is a saying called "the most ruthless imperial family", which means that the imperial family has no family affection, but politics is great, in fact, but all those who are related to politics, family affection no longer exists, let alone kinship, the so-called political marriage, but a temporary blindfold, can only safeguard temporary interests, once political interests conflict, even the best marriage can only be a tragedy.
Zhang Fei
At the same time, during the Three Kingdoms period, because they were relatives, they were two opposing sides and fought each other, and there were also many people, such as Zhong Xuan (Zhong Hui's father) who was loyal to Cao Cao and Guo Yuan, who was loyal to Yuan Shao, who once went to war, Ma Chao and Pang De's side assisted Zhong Yuan in battle, and finally Pound killed Guo Yuan, and brought Back Guo Yuan's head, Zhong Xuan cried loudly after seeing Guo Yuan's head, because Guo Yuan was Zhong Yuan's nephew, and it was not uncommon for this kind of kinship to be an enemy on the battlefield.
Returning to the Battle of Hanzhong in which Liu Bei fought against Xiahou Yuan, Liu Bei's purpose was to take Hanzhong, and Xiahou Yuan was the defender of Hanzhong, which was Liu Bei's highest purpose, and no difficulty could prevent Liu Bei from killing Xiahou Yuan and taking Hanzhong, including Zhang Fei's kinship, Liu Bei would not open up because Xiahou Yuan and Zhang Fei were relatives, and Xiahou Yuan's identity would not affect Liu Bei's strategic arrangements for the entire Hanzhong war.
Zhang Fei's wife Xiahou Shi
Xiahou Yuan was killed by Huang Zhong on the battlefield, and may have died in the rebellion, when Xiahou Yuan led a small number of people to make up for the antlers, Huang Zhong led a large number of people and horses to rush to kill, a condescending charge, Xiahou Yuan was killed, because Liu Bei did not want to leave Xiahou Yuan at all. After Xiahou Yuan was killed, Zhang Fei's wife Lady Xiahou, who was also Xiahou Yuan's niece, asked Liu Bei to bury Xiahou Yuan, and Liu Bei still agreed to this request, because the deceased was the eldest, the person was already dead, and it was basic humanitarianism to bury him.
If, on the battlefield, Xiahou Yuan was not killed, but captured, how would Liu Bei deal with Xiahou Yuan?
In fact, this problem is very simple, how to deal with it, do not have to consider anything, simply put: if Xiahou Yuan is willing to surrender, then Liu Bei will accept Xiahou Yuan, and give high-ranking officials a generous degree, and can also be reunited with Zhang Fei's family, if Xiahou Yuan is not willing to surrender, then Liu Bei can only kill Xiahou Yuan, or keep Xiahou Yuan locked up until he dies.
Liu Bei fought the Battle of Hanzhong
Of course, if Xiahou Yuan is not willing to surrender, then it is possible that Zhang Fei's wife, that is, Lady Xiahou, will come out to persuade Xiahou Yuan to surrender, but in terms of Xiahou Yuan's character, he should not surrender, but will choose to be heroic and righteous, in that case, Xiahou Yuan will still die, Lady Xiahou may be sad, but it cannot change anything, and the woman's status at that time was very low, which was an end for Xiahou Yuan.
So, if Xiahou Yuan was captured, what would Be Zhang Fei's attitude? Will it protect Xiahou Yuan?
From Zhang Fei's point of view, he did not know Xiahou Yuan at all, nor did he meet Xiahou Yuan, the reason why he married Xiahou Yuan's niece, it was because Lady Xiahou was robbed by Zhang Fei, in the chaotic world, this kind of thing is very normal, and women had no status at that time, like commodities, after Zhang Fei snatched Lady Xiahou, the two became husband and wife, as for the relatives in Lady Xiahou's family, Zhang Fei did not dare to see, nor could he see, Zhang Fei was even more reluctant to see.
Therefore, for Zhang Fei, he was loyal to Liu Bei, and the consideration of the problem was also considered from Liu Bei's point of view, if Xiahou Yuan was captured, from the perspective of talent, Xiahou Yuan was the commander of the front army of the Cao Wei regime, and he was also a rare talent, although he had the title of General Baidi, Xiahou Yuan's military ability would not be bad, plus he had this relationship with Zhang Fei, so Zhang Fei most hoped that Xiahou Yuan would surrender, and even encourage his wife to surrender.
However, this matter does not depend on Zhang Fei, but on Xiahou Yuan's attitude, if Xiahou Yuan is not willing to surrender and chooses to die, no one can change him, and Zhang Fei cannot change, so whether there is this layer of relationship or not, how Xiahou Yuan's outcome is, depends on Xiahou Yuan himself, not others.
Xiahou Yuan was killed on the battlefield
If Xiahou Yuan is captured, Liu Bei should have a neutral attitude in the whole incident, and at the same time, he should also act according to Xiahou Yuan's attitude, if Xiahou Yuan is willing to surrender, then in terms of Liu Bei's character, he will accept Xiahou Yuan, if Xiahou Yuan is not willing to surrender, then Liu Bei will send people to persuade Xiahou Yuan to surrender, and in the end he still cannot persuade Xiahou Yuan, then Liu Bei will come to a "tearful beheading Xiahou", which may be another ending for Xiahou Yuan.