Goi of Baekje - Foreign Relations

Foreign Relations

Under Goi's reign, Baekje expanded control of the Han River region and gained permanent ascendancy over the remaining states of the Mahan, a loose confederacy in the southwest of the Korean Peninsula. He also attacked the borders of Baekje's eastern rival Silla.

Baekje also changed its defensive posture against the Chinese to an offensive one. Goi attacked the Chinese-controlled Lelang commandery and the Daifang commandery when the Chinese launched an attack against the Han River region to disrupt and prevent Baekje's emerging power. In 246, according to both the Korean Samguk Sagi and the Chinese Wei Zhi, Baekje went to war against Daifang commandery, and the commandery's governor Gong Zun was slain.