The Khitan troops invade Goryeo after crossing…

The Khitan troops invade Goryeo after crossing the Aprok River, but the Goryeo general Gang Gam-chan dams a stream and releases it as the Khitan troops are crossing.

Despite suffering significant casualties, some Khitan troops march to Gaegyeong, the capital of Goryeo.

During their campaign, general Gang Gam-chan cuts the supplies of the Khitan troops and harasses them relentlessly.

Exhausted, the Khitan troops decide to retreat hastily northward.

Monitoring the movement of their troops, general Gang Gam-chan attacks them in the vicinity of Guju, ending in a complete victory to the Goryeo Dynasty.

Barely a few thousand of the Liao troops survive after the bitter defeat by Goryeo at the Battle of Guju in 1019.

Many more are captured after surrendering along the river banks.

After the battle, peace negotiations follow and the Khitan will not invade Goryeo again.

Goryeo enters in a long and peaceful period with their foreign neighbors across the Aprok river.

The victory at the battle of Hong-Hwa-Jin is today called one of the three greatest military victories in Korean history (the others are the Battle of Salsu in 612 and the Battle of Hansando in 1592).