苏定方
In winter 660, Emperor Gaozong ordered Su Dingfang, as well as other generals Qibi Heli (), Liu Boying (), and Cheng Minzhen to attack Baekje's ally Goguryeo. By fall 661, Su had placed Goguryeo's capital Pyongyang under siege. By spring 662, however, after the general Pang Xiaotai () was defeated and killed in battle with Goguryeo forces and Su could not capture Pyongyang he, faced with problems of severe snow storms, was forced to withdraw.