Muryeong of Baekje (462–523, r. 501–23) was the 25th king of Baekje, one of the Three Kingdoms of Korea. During his reign, Baekje remained allied with Silla against Goguryeo, and expanded its relationships with China and Japan. In 501, he sent an army to attack Goguryeo's Sugok-seong. In 503, he repelled an attack by the Mohe. In 507, he successfully countered another attack by Goguryeo and Mohe forces. In 512, Goguryeo conquered two castles, but Muryeong personally led 3,000 men to destroy the Goguryeo army. In 523, he ordered the building of a fortified wall to defend the northern border. According to both historical and archeological sources, contact and trade between China and Baekje increased during Muryeong's reign. In 512, according to the Liang shu, Muryeong sent Baekje's first mission to the newly established court of the Chinese Liang Dynasty. A second mission was sent in 521, announcing various victories over Goguryeo. In reply, the Liang emperor bestowed various titles on him, including "Great General Tranquilizing the East (寧東大將軍)" and "King of Baekje". These titles were also found engraved on a tablet in King Muryeong's tomb. In 503, he sent a bronze mirror, and in 513 and 516, Confucian scholars to Japan.

Muryeong of Baekje - Wikipedia