666년~668년 전쟁에서 淵男生의 鄕導 역할에 대한 考察

Abstract

Yeun Nam-saeng(淵男生), the successor of Yeon Gaesomun, was in crisis in a power struggle with his younger brothers. It seems that he asked for the Tang Dynasty to send troops, acknowledging that it was Goguryeo's superior country and promising to fulfill the duties of the subordinate state included in its dominance. In the Tang Dynasty, Namsaeng's request secured a justification to intervene in Goguryeo's internal affairs, so it dispatched a Tang army led by the Grand Commander Qifu-Heli(契苾何力). Namsaeng was approved by the Tang for his original position in Goguryeo, Tae-dae-hyung(太大兄), and was appointed as the Pyongyang-tao Commander-in- chief(平壤道 行軍大總管), a qualification to subdue the forces of his younger brother Nam-gun who threatened him. However, when 150,000 Goguryeo soldiers blocked their entry from the Liao River, the Tang army returned. In December of that year, the Tang organized an army for an all-out war against Goguryeo, and the war between Goguryeo and Tang began. The second dispatched army led by Li Ji(李勣) started attacking the castle in February and captured it only in September. In the meantime, Qifu-Heli and others captured Mokjeoseong Fortress(木底城), Namsoseong Fortress(南蘇城), and Changamseong Fortress(倉巖城) in the Soja River(蘇子河) basin, and joined Nam-saeng's forces at Gugnaeseong Fortress(國內城). Namsaeng contributed to the capture of these three provinces and entered the Tang Dynasty with 6 castles including Gugnaeseong Fortress. At this time, Namsaeng seems to have decided to surrender, and received the title of the Commandery Duke of the Xuanyu(玄菟郡公). With Namsaeng's surrender, the Tang Dynasty was able to secure a safe route and outpost for the invasion of Goguryeo, and it was possible to wage war more easily based on information about Goguryeo's domestic situation. In 668, Namsaeng was sent to Goguryeo where war was going on. This decision was made because the results of the war with Goguryeo were not revealed as much as the Tang Dynasty intended, and there was a concern that the war would be prolonged. Due to Namsaeng's participation in the war and the reinforcements, the Tang army was able to break through the defenses at the Yalu River and advance to the Pyongyang Fortress(平壤城). Based on his information and personal connections, the Tang army was finally able to capture the Pyongyang Fortress through effective attacks and conciliation of influential persons. After the fall of Goguryeo, Emperor Gojong awarded him with ‘the title of the Duke of Byeon-guk(卞國公)’ for his “guid(鄕導)” achievements in the war and allowed him to live a comfortable life with a high status.