Chang Munmu

Chang Munmu (Seomun: 張文武, Jinmun: 장문무; 277-356 AC) was a Zhenian, , , and businessman during Zhenia's Eastern Zhen dynasty. Being the direct descendant of Chang Museon, the former naval commander of Zhuhae that was ousted from the city and resettled in the Eastern Zhen centuries before his birth, he became a successful naval commander of the Eastern Zhen. At age 32, after becoming the Governor of Gwangseong, Chang led a series of anti-piracy campaigns against Balhae pirates in the Gulf of Danguk and the North Zhenian Sea, in cooperation with the Republic of Zhuhae. With his base on modern-day Gwangseong, he led a series of expeditions to previously uncharted regions and established a network of maritime trade routes throughout the western Hanmaric Ocean, with Gwangseong at its center.