公孫淵
Having heard of the new preparations made against him, Gongsun Yuan desperately dispatched an envoy to the Wu court to apologise for his betrayal in 233 and begged for help from Sun Quan. At first, Sun Quan was ready to kill the messenger, but he was persuaded by Yang Dao () to make a display of force and possibly gain advantages if Sima Yi and Gongsun Yuan became deadlocked in war. Cao Rui became concerned about the Wu reinforcements, but the adviser Jiang Ji read through Sun Quan's intentions and cautioned Cao Rui that while Sun Quan would not risk a deep invasion, the Wu fleet would make a shallow incursion into Liaodong if Sima Yi does not defeat Gongsun Yuan quickly enough.