 The Northern Qi forces sieged Pingyang with all effort—and after several days, were able to breach the wall—but at this point, Gao Wei stopped his attack and summoned Consort Feng so she could witness the fall of the city.When she arrived, however, Northern Zhou forces had already filled in the breach, and therefore held the city.Around the new year 577, Northern Zhou's Emperor Wu led an army intending to lift the siege on Pingyang.