Jiangling County
Between 222 and 223, the Wei generals Cao Zhen and Xiahou Shang led their troops to attack the Wu-controlled Jiangling County (江陵縣; in present-day Jingzhou, Hubei), which was defended by the Wu general Zhu Ran. At the same time, another detachment of Wei troops occupied Zhongzhou (), an island in the Yangtze River near Jiangling County. When Zhuge Jin heard about it, he led Wu forces from Gong'an County to reinforce Zhu Ran. However, he turned out to be an incompetent military commander as he showed weak leadership, adopted a slow and reactive approach, and spent too much time on discussion and planning as opposed to actively seizing opportunities to attack the enemy. Due to his incompetence, the siege dragged on, and Sun Quan became rather unhappy with him. The siege on Jiangling County was eventually lifted after the Wu general Pan Zhang came up with a plan to burn down the Wei forces' pontoon bridges and drive them back. Although Zhuge Jin did not make any significant achievements in the battle, he received credit for contributing to the Wu forces' overall success in defending Jiangling County.