Near the Garrison Settlement of Heunghwajin, there was a small stream. General Gang ordered the stream blocked until Liao troops began to cross it, and when the Liao forces were mid-way across, he ordered that the dam be destroyed so that the water would drown much of the Liao army. The damage was great, but the Liao did not abandon their campaign in spite of the challenges represented by defenders and by winter conditions in the northwest. They pushed through to approach Kaesong, the capital, but were defeated by a force led by General Gang Gam Chan.