Earlier that year, the Wu general Xu Sheng had ordered the construction of a whole stash of dummy defence walls and turrets along the southern bank of the Yangtze from Jianye downstream to Jiangcheng in preparation for a naval attack by Wei forces.
[4] In the winter of 224–225, Cao Pi ordered his troops to destroy the blockading walls and personally led the 100,000 strong Wei fleet as they set sail on the Yangtze.
[6] When the Wu general Sun Shao heard about the Wei retreat, he ordered his subordinate Gao Shou (高壽) to lead 500 men to launch a surprise night raid on the enemy.
The retreating Wei forces were caught off guard by the raid; Gao Shou and his men even captured and made off with the parasol of Cao Pi's chariot.
In the subsequent 24 years, the Wei forces switched from their offensive approach to a defensive one, and succeeded in repelling a number of Wu invasions.