Between mid June and early September 234, Sun Quan personally led a 100,000 strong Wu army to attack the Wei fortress of Xincheng at Hefei. At the same time, he ordered Lu Xun and Zhuge Jin to lead another 10,000 troops to attack Xiangyang, and Sun Shao and Zhang Cheng to lead their troops to attack Huaiyin County () in Guangling Commandery (around present-day Huai'an, Jiangsu). The Wei general Man Chong, who oversaw Xincheng's defences, successfully repelled the Wu invaders and killed Sun Quan's nephew Sun Tai in battle. Sun Quan eventually ordered a retreat when a plague broke out in his army and after he heard that the Wei emperor Cao Rui was personally leading reinforcements to Hefei. Sun Shao and Zhang Cheng also pulled back from Guangling Commandery after learning of Sun Quan's retreat from Hefei.