In the second Goguryeo-Sui War, Eulji Mundeok maneuvered the Goguryeo troops so that they engaged the Sui army seven times a day, each time feigning defeat and retreating, leading the Sui army deeper south with the perception of victory. The Sui army eventually advanced to about 20 km from Pyeongyang, the capital of Goguryeo.
During the second Goguryeo-Sui War, Eulji Mundeok guided the Goguryeo forces into engaging the Sui army seven times a day. Each engagement was feigned as defeat and retreat, which led the Sui army to advance southward toward Pyeongyang, the capital of Goguryeo, about 20 kilometers away.