Lü Meng's invasion of Jing Province was fought between the warlords Sun Quan and Liu Bei in the winter of 219–220 in the late Eastern Han dynasty.

Sun Quan's forces, led by Lü Meng, invaded Liu Bei's territories in southern Jing Province, which covered present-day Hubei and Hunan.

The campaign occurred after the Battle of Fancheng and concluded with victory for Sun Quan's forces, who completely captured all of Liu Bei's territories.

The fall of Jing Province and Guan Yu's death provided the trigger for the Battle of Xiaoting between Liu Bei and Sun Quan between 221 and 222.

After Lü Meng succeeded in capturing Lingling by trickery and persuading the administrators of Changsha and Guiyang to surrender to Sun Quan's side, he then led his troops to Yiyang to reinforce Lu Su.

When Liu Bei heard about it, he returned to Gong'an County and ordered Guan Yu to lead an army to stop Lü Meng.

[6][7] During this time, Guan Yu had a standoff with Lu Su at Yiyang, where he planned to lead 5,000 elite soldiers to cross the upstream shallows at night.

However, Sima Yi and Jiang Ji reminded him that Sun Quan would feel restless if Guan Yu managed to capture Fancheng since he already felt uneasy about Liu Bei's growing influence.

[19] After Lü Meng returned to Jianye, he recommended Lu Xun to replace him as the frontline commander of Sun Quan's forces in Jing Province.

Sun Quan then commissioned Lu Xun as a Lieutenant-General and ordered him to go to Jing Province to take up Lü Meng's post at Lukou (陸口; at Lushui Lake near present-day Chibi, Hubei).

At Xunyang (尋陽; present-day Huangmei County, Hubei), Lü Meng ordered his men to hide in vessels disguised as civilian and merchant ships and sail towards Jiangling, the capital of Nan Commandery.

Along the way, Lü Meng employed infiltration tactics to disable the surveillance towers set up along the river so that Guan Yu would be unaware of the invasion.

[24] When Guan Yu embarked on the Fancheng campaign, he left his subordinates Mi Fang and Shi Ren behind to defend his key bases in Jing Province – Nan Commandery (南郡; around present-day Jingzhou, Hubei) and Gong'an County.

[25] During the invasion of Jing Province, Lü Meng showed understanding towards Mi Fang and successfully induced him into surrendering Nan Commandery.

Yu Fan, one of Sun Quan's advisers, also managed to persuade Shi Ren to give up resistance and surrender Gong'an County.

Liu Bei's territories in Jing Province largely fell under Sun Quan's control after the surrenders of Mi Fang and Shi Ren.

Lu Xun followed up by sending his subordinates Li Yi (李異) and Xie Jing (謝旌) to lead 3,000 men to attack Liu Bei's forces led by Zhan Yan (詹晏) and Chen Feng (陳鳳).

After Li Yi and Xie Jing defeated Zhan Yan and Chen Feng, they also attacked Fangling Commandery (房陵郡) and Nanxiang County (南鄉縣) respectively and captured these territories.

[31] Wen Bu (文布) and Deng Kai (鄧凱), two influential men in Zigui County, rallied thousands of locals to form an army to attack Lu Xun in the west of southern Jing Province.

After their defeat, Wen Bu and Deng Kai fled further west in Yi Province, where Liu Bei received them and appointed them as military officers.

[32] Two years later in 221, Liu Bei personally led his forces to attack Sun Quan retake Jing Province and avenge Guan Yu.