Many people evaluate Sun Quan, generally saying that he is the "lord of shoucheng", relying on the foundation laid by his father Sun Jian and brother Sun Ce in Jiangdong and Cao Cao and Liu Bei. In fact, it is not accurate to say so, Sun Quan has been in charge of Eastern Wu since 200 AD, and he is very capable of fighting against Cao Liu.
Moreover, Sun Quan did not just stick to it, but also attacked Shu and killed Guan Yu to capture Jingzhou, and repeatedly attacked Hefei for the Northern Expedition against Wei Sun Quan, in addition, Sun Quan seemed to be particularly obsessed with overseas territories, and he had sent troops to Taiwan Island, Hainan Island, and Liaodong Peninsula:
<h1 class="pgc-h-arrow-right" data-track="4" > the island of Taiwan</h1>
In the second year of Huanglong (230), Sun Quan sent the generals Wei Wen and Zhuge Zhi to capture thousands of soldiers, floating in the sea to seek Yizhou, Qizhou, and Wu's strength reached Yizhou (that is, Taiwan Island), although they did not find Qizhou, they captured thousands of people in Taiwan and returned. Wei Wen and Zhuge Zhi and others were the first people recorded in historical records to arrive in Taiwan, and since then, Taiwan's economic and cultural ties with the mainland have gradually become closer. By the time of the Yuan Dynasty, Taiwan had become an inalienable territory of China.
Although Sun Quan's invasion of Taiwan now seems of far-reaching significance, at that time, Sun Quan's idea was unanimously opposed by the important ministers Lu Xun and Quan Zong, who held that "thousands of miles of attack, unpredictable storms, easy water and soil for the people, will cause diseases and epidemics, and now they will drive out the public, they will not be involved in the economy, they want to gain more and lose, and they want to benefit and oppose harm." It is true that Sun Quan sent tens of thousands of troops, but only brought back a few thousand local natives, which can be said to be more than worth the loss.
<h1 class="pgc-h-arrow-right" data-track="7" > Hainan Island</h1>
In the sixth year of emperor Yuan Ding of the Western Han Dynasty (111 BC), the Fubo general Lu Bode and the Louchuan general Yang Shu led their divisions to quell the Rebellion of South Vietnam. In the first year of the Yuan Dynasty (110 BC), Zhuya Commandery (朱崖郡) (治今琼山) and Dan'er Commandery (儋爾郡) (儋耳郡) were established on Hainan Island, which were under the jurisdiction of Jiaozhou Thorn History. These are the two earliest administrative place names of Hainan Island to be included in the Chinese territory, marking the beginning of the direct rule of the central government over Hainan Island.
According to the Chronicle of the Three Kingdoms and the Biography of Wu, in the fifth year of Chiwu (242 AD), Sun Quan sent the general Nie You and the lieutenant Lu Kai to lead 30,000 troops to conquer Zhuya and Dan'er. According to the Chronicle of the Three Kingdoms and the Biography of Lu Kai, during the Chiwu period, Lu Kai served as the Taishou of Dan'er, and was awarded the title of Lieutenant of Jianwu For his military merits in the conquest of Zhuya. Judging from the above records, during the Three Kingdoms period, the Eastern Wu regime continued its effective jurisdiction over Hainan Island since Emperor Wu of the Han Dynasty.
<h1 class="pgc-h-arrow-right" data-track="10" > liaodong peninsula</h1>
Sun Quan's attachment to Liaodong has always been regarded by many as Sun Quan's brainlessness and arrogance. Gongsun Yuan, who had divided Liaodong, had been in contact with Sun Quan many times since the seventh year of Huang Wu (228). In the second year of Jiahe (233), Gongsun Yuan sent envoys to claim subjection to Sun Wu in an attempt to use Sun Wu as an outsider to rebel against Wei. Sun Quan planned to crown Gongsun Yuan as the King of Yan, but Gu Yong, Zhang Zhao, and other courtiers opposed him, but Sun Quan still sent Zhang Mi, Xu Yan, and others with gold and jade treasures to lead a large contingent to establish Gongsun Yuan as the King of Yan.
Gongsun Yuan did not expect that Sun Quan would value himself so much, but he thought that Sun Wu was far away and Cao Wei was close, and he was afraid of Cao Wei's crusade, and coveted the treasure sent by Sun Wu, so he lured Wu to behead and offered his head to The Wei Ming Emperor Cao Rui. Sun Quan resented Gongsun Yuan's trickery and repeated deception, and planned to personally lead an army to the conquest, but was persuaded by Lu Xun and others to stop the expedition. Sun Quan was really teased by Gongsun Yuan, and the floating sea sent people's heads thousands of miles, and he was reduced to a laughingstock.
However, Sun Quan's connection with Liaodong was by no means futile: on the one hand, Eastern Wu's merchant fleet opened up a sea route from Jiangsu and Zhejiang to the Liaodong Peninsula, and by the time of the Eastern Jin Dynasty and the Southern and Northern Dynasties, this route had become an important channel for exchanges between the Jiangnan regime and the northern region; on the other hand, after years of trade and exchanges, the advanced culture and handicraft technology of Jiangnan began to gradually spread to Liaodong, and the products of Liaodong could also be smoothly sold to all parts of the south, effectively promoting the social, economic and cultural development of the two places.
Sun Quan was obsessed with Taiwan Island, Hainan Island, and the Liaodong Peninsula, and insisted on sending troops, which showed his dedication and exploration of overseas territory. Although at the time, Sun Quan's invasion of Taiwan Island and the Liaodong Peninsula was meaningless and seemed foolish. However, from a long-term perspective of history, Sun Quan sent troops to Taiwan Island and established the earliest ties between Taiwan and the mainland; sent troops to Hainan Island to restore his jurisdiction over Hainan Island; and sent an envoy to Liaodong to strengthen economic and social exchanges!
References: Notes on Pei Songzhi in romance of the Three Kingdoms, And Lu Simian in History of the Three Kingdoms