Jangsu of Goguryeo - Relations With China and Rourans

Relations With China and Rourans

In 479, Jangsu sent delegate to Rouran to establish friendly relationship. As a resuit, Rouran Khagan gave up the large territory which were spread in present-day Mongolia. After settling peace with Rourans, Jangsu attacked the Khitans, then a branch of Xianbei confederacy at the time.

After Khitans surrendered to Goguryeo, Jangsu sent gifts to both Northern Wei and Southern Qi, which took over southern half of China after overthrowing Song in 479. Both Qi and Wei tried to tighten Goguryeo's relationship with them; Wei emperors treated Goguryeo delegates equal to Chinese delegates. However, King Jangsu continued to keep good relationship with Qi; the attitude further outraged Emperor Xiaowen of Northern Wei again, and at last he gave order to kidnap the Goguryeo delegate before he gets to Qi capital. However Jangsu sent delegates again to Qi, and Northern Wei could not block Jangsu from causing Southern Dynasties to attack it.

While communicating with both nations, he also plundered gifts from Japanese to the Southern Dynasties. As well as King Gaero, who sent letter to Wei court asking for troops, rulers of Silla, Gaya, and Japan also grieved for Goguryeo's power in East Asia, which actually controlled entire foreign relations of the region.