There are no eternal enemies and no eternal friends. During the Three Kingdoms period, the alliance between Sun Quan and Liu Bei perfectly confirmed this assertion. Before the Battle of Chibi, due to the great pressure of Cao Cao, Sun Quan had to put aside his contradictions with Jingzhou and ally with Liu Bei. Between the two sides, they worked together to defeat Cao Cao. Later, Sun Quan lent Liu Bei territory and married his sister to Liu Bei, and the alliance entered a honeymoon period. Until Liu Bei gradually sat up, Sun Quan felt threatened, and the alliance began to be unstable. Later, it even evolved to the point of sneaking into Jingzhou and tearing up the alliance.
However, no matter how legitimate Lü Meng's reasons for taking Jingzhou were, he could never change the objective situation of Sun, Liu, and Cao Cao. Therefore, the Sun-Liu Alliance still has the necessity to exist. Before the Battle of Yiling, Sun Quan had already sent envoys to seek peace. However, the angry Liu Bei categorically refused. Moreover, Eastern Wu's peacemaking was not very sincere. It was not until the two sides fought a big battle, losing each other's troops, and Cao Pi was ready to take advantage of the fire to loot, and then he once again went to the united.
So, who really saved sun liu alliance? According to the "Chronicle of the Three Kingdoms and the Biography of Deng Zhi", "Zhuge Liang, the Minister of The Three Kingdoms, was deeply worried about the death of the first lord of the power, and he was afraid that there would be a different plan, and the unknown would be like this... Naisaki repairs Yu Quan. Judging from this record, it was under Zhuge Liang's strong advocacy and Deng Zhi's actual manipulation that the Sun-Liu Alliance was re-concluded.
Therefore, the average person will naturally think that the restoration of the Sun Liu Alliance, Zhuge Liang and Deng Zhi are the most critical figures. However, this is not the case. The restoration of the alliance was indeed completed in the era of Zhuge Liang and Deng Zhi, but there was a process. In zhuge liang's time, it was only melon ripeness, and the real key figure was someone else. It can be said that the most critical person in the salvation of Sun Liu's alliance is Liu Bei, and the other is Cao Pi. Why do you say that, and listen to me.
According to the Chronicle of the Three Kingdoms, "In October, Zhao Cheng Xiang Liang camped in chengdu on the northern and southern outskirts. Sun Quanwen first lived in the White Emperor, and was very afraid, so he sent envoys to please make peace. Although Liu Bei was defeated at the Battle of Yiling, with the retreat of the remnants of the army and the rescue of Zhao Yun and Ma Zhong, Liu Bei already had considerable strength in Yong'an. Sun Quan, on the other hand, was initially prepared to crush Liu Bei in one fell swoop. Once allies, to this point is lamentable. However, in the face of Liu Bei's strength, Sun Quan softened.
Liu Bei, a generation of tyrants, although defeated, did not choose to flee, but showed the courage to guard the door of the family. Seeing Liu Bei's strength and determination, Sun Quan was afraid, so he sent envoys again to seek peace. From here, if Liu Bei had not stopped at the White Emperor City, but fled back to Chengdu, it is estimated that Sun Quan would not be afraid. If the Shu Han were weak, Sun Quan might still have the idea of annexing Western Shu. Therefore, in the process of the two families' strike and peace, Liu Bei played a very important role.
According to the Chronicle of the Three Kingdoms and the Biography of Wu, "In December, Zheng Quan, the Grand Master of Taizhong, hired Liu Bei to the White Emperor and began to restore Tongye. And Liu Bei's sincerity to Sun Quan also gave feedback on his own opinions. In the Chronicle of the Three Kingdoms, the Biography of the Ancestors records: "The First Lord Xu Zhi sent The Taizhong Grand Master Zong Wei to repay the order. Judging from this record, although liu bei, who was defeated, was very reluctant to re-ally with Sun Quan, he had to accept the reality of defeat. Therefore, although Liu Bei did not ally with Sun Quan, he also released a signal of peace.
On the other hand, the key figure who really contributed to Sun Liu's alliance was Cao Pi. Emperor Cao Pi of Wei had originally hoped that wu and Shu would lose both sides of the fight, and that he would reap the benefits of the fisherman, so he immediately looked at it. Unfortunately, Liu Bei said that defeat was defeat, and he did not give Cao Pi a chance to pick up the leak. Unwillingly, Cao Pi resolutely launched the Battle of Wu after being angry with Sun Quan in diplomacy with Sun Quan. This time, Sun Quan would face pressure from both Liu Bei and Cao Pi. Under these circumstances, Sun Quan was simply unable to fight on two fronts. Therefore, Cao Pi's great pressure on Sun Quan made Sun Quan's hopes of annexing Shu Han completely frustrated.
In this situation, uniting Liu Bei and confronting Cao Pi alone was obviously the wisest choice. Sun Quan, who had always been able to bend and stretch, did not hesitate to ask Liu Bei for peace. Obviously, without the pressure of Cao Pi, the Sun Liu Alliance may not be successful. After this, Sun Quan and Liu Bei began to communicate with each other continuously to negotiate further alliances.
Although Liu Bei died of illness in the White Emperor City not long after, he had already set the tone for the relations between the two countries, which made Zhuge Liang's marriage to Eastern Wu a legitimate thing. Otherwise, without Liu Bei's attitude before his death, zhuge Liang would have had a hard time re-alliing with Eastern Wu shortly after Liu Bei's death. And Deng Zhi's envoy to Eastern Wu is more to discuss and improve at the level of details, which has not hindered the overall situation. Therefore, it was Liu Bei and Cao Pi who really saved Sun Liu's alliance, not Zhuge Liang and Deng Zhi.
Reference book: Romance of the Three Kingdoms