After the victory of the Sun-Liu coalition, they all took the opportunity to rapidly expand their sphere of influence, with Liu Bei seizing the four southern counties of Jingzhou and Sun Quan taking the opportunity to expand his influence to Jiaozhou.

【Stand firm in Jingzhou】

After his victory at the Battle of Jiangling, Zhou Yu was appointed by Sun Quan as the Taishou of Nanjun, and he gave part of the territory on the south bank to Liu Bei, who renamed the mouth of the Youjiang River as Gong'an and garrisoned his troops there.

According to the "Biography of Jiangbiao", Zhou Yu was the Taishou of Nanjun at that time, and he divided the territory of the southern bank to Liu Bei. Liu Bei set up a special camp at the mouth of the Youjiang River and renamed it Gong'an. When the officials and soldiers under the command of Liu Biao saw Liu Bei's troops from the north, most of them betrayed and came to Liu Bei. Liu Bei thought that Zhou Yu had given too little land to appease his subordinates, and later borrowed several counties of Jingzhou from Sun Quan.

Liu Bei then listed Liu Biao's eldest son Liu Qi as the assassin of Jingzhou, and led the army to conquer the four southern counties of Jingzhou. After Cao Cao descended to Jingzhou, he was the acting general of Huang Zhong at that time, and he was still an official in Changsha County, and he was under the command of Han Xuan, the Taishou of Changsha, and then Han Xuan took refuge with Liu Bei. Later, Liu Qi died of illness, and everyone recommended Liu Bei as the pastor of Jingzhou, and the public security office, and Jingnan belonged to Liu Bei. After Liu Bei occupied Jingzhou, Lei Xu, the commander of the Lujiang battalion, led tens of thousands of his subordinates to surrender to Liu Bei.

The reason why Liu Bei was able to easily seize the four counties of Jingnan was because of his strong soldiers, but it could not be ignored that in the battle of Jiangling, Jingnan had lost contact with Cao Cao's group and became a borderless land, and Cao Cao had never been a heavy army in the south of the Yangtze River, Liu Bei also had a huge reputation here, and in the name of Liu Qi, the difficulty of the crusade in southern Jingzhou was naturally greatly reduced.

Among them, Jin Xuan has different records in the "Notes on the Records of the Three Auxiliary Decisions", and its original text is "Jin Xuan Zi Yuan Ji, Jing Zhao people, successive Huangmen Lang, Hanyang Taishou, Bai Yilang, Qianzhong Lang General, Lingwuling Taishou, for the preparation of the attack and robbery to death." ”

After taking control of the four counties of Jingnan, Liu Bei appointed Zhuge Liang as the commander of the military division, and sent him to supervise the three counties of Lingling, Guiyang, and Changsha, and collect taxes to supplement military supplies. He also appointed Zhao Yun, a partial general, to concurrently serve as the Taishou of Guiyang.

According to the record of "Yun Bei Biography", after Liu Bei took control of Guiyang, he replaced Zhao Fan with the partial general Zhao Yun as the Taishou of Guiyang. Zhao Yun excused himself and said: "I have the same surname as you Zhao Fan, and your brother is just like my brother, so it seems inappropriate to combine with your sister-in-law." So he insisted on resigning him.

At that time, someone persuaded Zhao Yun to accommodate her as his wife, Zhao Yun said: "Zhao Fan was actually forced to surrender, his mind is unpredictable, there are many good women in the world, why should I really do this?" In the end, I still didn't marry Fan. In the end, Zhao Fan really had a different heart as Zhao Yun expected, and fled, Zhao Yun didn't mind at all, and then Zhao Fan disappeared.

After Liu Bei got the four counties of Jingnan, his power increased greatly, and Sun Quan married his sister to Liu Bei in order to win him over. At that time, Liu Bei also showed goodwill to Sun Quan, and Sun Quan acted as the general of the chariot cavalry, led the Xuzhou pastor, and then went to Jiangdong in person to meet Sun Quan to ask for the governor of Jingzhou, and finally Sun Quan lent Nanjun to Liu Bei.

The record of borrowing Jingzhou is inconsistent in the "Chronicles of the Three Kingdoms" and the "Jiangbiao Biography", the "Three Kingdoms" records that Liu Bei begged to be the governor of Jingzhou, that is, borrowed Jiangling, while the "Jiangbiao Biography" directly says that Liu Bei borrowed several counties from Jingzhou. However, there is no record of Jiangdong's seizure of the four counties of Jingnan in "Jiangbiao Biography", and there is no relevant record in other sources, and the record of Liu Bei's southward journey is in many materials, so the record of Liu Bei borrowing several counties in "Jiangbiao Biography" is not reliable, and "Jiangbiao Biography" itself admires Jiangdong, and its main descriptions are Jiangdong people, so it is likely to be written out of the need to beautify Jiangdong, and it is not completely in line with reality.

At that time, Cao Cao occupied the Xiangyang and Fancheng areas in the north, Zhou Yu and Lusu in the south controlled the Jiangling area, and Liu Bei occupied the public security area, so Liu Bei mainly borrowed Jiangling, or the part of the southern county controlled by Sun Quan's group, not the entire Nanjun.

After Liu Bei borrowed Jiangling from Sun Quan, he had already occupied most of Jingzhou, including Wuling County, Changsha County, Guiyang County, Lingling County, and part of Jiangxia County, as well as the southern part of Nanjun, and became the new lord of Jingzhou.

【Step Below Jiaozhou】

During the period of the Three Kingdoms, Jiaozhou was basically a barren land, and it had not been developed on a large scale, and it was located in a remote area, so the sense of existence was very low, and there were frequent civil strife in Jiaozhou.

After Zhang Jin, the former assassin of Jiaozhou, was killed by his subordinate general Ou Jing, Liu Biao sent Lai Gong, a native of Lingling, to replace Zhang Jin as the assassin. At this time, Shi Huang, the Taishou of Cangwu County, passed away, and Liu Biao sent Wu Ju to act as the Taishou of Cangwu. In order to curb the expansion of Liu Biao's power, the imperial court gave Shi Xie an edict appointing him as the general of Suinan Zhonglang to manage the military affairs of the seven counties, while still serving as the Taishou of Jiaozhi. Later, the relationship between Wu Ju and Lai Gong deteriorated, and Wu Ju sent troops to attack Lai Gong. Lai Gong fled back to Lingling.

In the fifteenth year of Jian'an (210), Bu Qima went out to serve as the Taishou of Poyang. During the year, he was reappointed as the general of Jiaozhou Assassin and Liwu Zhonglang, commanding 1,000 military archers, and soon traveled south. In the second year, he was appointed as the envoy and the general of the southern Zhonglang. At that time, Liu Biao's Cangwu Taishou Wu Ju secretly harbored different intentions, and his appearance was attached to his inner deviance. Bu Qi humbly soothed Wu Ju, invited Wu Ju to come to meet, and took the opportunity to behead him to show the public, and Bu Qi Ma was shocked.

After that, Shixie led his brothers to obey Buqi's orders. Sun Quan promoted Shi Xie to General Zuo, and Shi Xie sent his own son to Sun Quan as a hostage. From then on, the area of Lingnan began to belong to Sun Quan.

Jiangdong group in the battle of Chibi victory for a period of time, to the north, west, south in addition to the east of the coast began to expand their sphere of influence, the west by Zhou Yu led the army crusade against Jiangling, the north is Sun Quan personally led the army to attack Hefei, the south is Buqi south to control Jiaozhou, in addition to the north of the war is unfavorable, the south of Jiaozhou was included in Sun Quan's sphere of influence and the west of Jiangling was also successfully captured by Zhou Yu.

Even if Sun Quan later lent the Jiangling area of Nanjun to Liu Bei, at that time the Jiangdong group had already controlled the entire territory of Yangzhou and Jiaozhou and part of the territory of Jingzhou Jiangxia except Jiujiang.

At this time, Sun Quan won two battles, the Battle of Chibi and the Battle of Jiangling, and was undoubtedly the second strongest prince after Cao Cao at that time.