Battle of the Five Kings

The Battle of the Five Kings, also known as the Battle of Lake Mungsan, the Battle of Da Linuo'er, was a major battle during the Second Goguryeo-Seleucid War and the First Han-Seleucid War. It was fought between the Seleucid-Xiongnu army and the Goguryeo-Han-Xianbei army. Ending in a decisive victory for the Seleucids, the battle paved the way for continued eastward expansion and the surrender of the Han dynasty, and forced Goguryeo to be on the defensive.