Gongsun Kang
The Korean kingdom of Goguryeo was invaded by Gongsun Kang in 204, resulting in the Daifang Commandery. In 208, Kang sent aid to Balgi in support of his claim to the Goguryeo throne, but was defeated by Gyesu, younger brother of Sansang of Goguryeo. However some time later Kang invaded Goguryeo again and forced them to submit. Gongsun Kang took the capital of Goguryeo so that Goguryeo was forced to move its capital further east. Cao Wei also invaded Goguryeo from 244 to 245. The Wei general Guanqiu Jian took the capital of Gungnae. The invasions, a retaliation against a Goguryeo raid in 242, destroyed the Goguryeo capital of Hwando, sent its king fleeing, and broke the tributary relationships between Goguryeo and the other tribes of Korea that formed much of Goguryeo's economy. Although the king evaded capture and eventually settled in a new capital, Goguryeo was reduced to such insignificance that for half a century there was no mention of the state in Chinese historical texts.