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The strategic significance of the Sui and Tang occupation of Beisha Castle - Focusing on discrepancies in names and location records -

  • military history
  • 2026, (140), pp.239~275
  • Publisher : Military History Institute, MND
  • Research Area : Humanities > History
  • Received : July 8, 2026
  • Accepted : September 9, 2026
  • Published : September 15, 2026

Choi Jin Yeoul 1

1한국전통문화대학교 역사문화연구소

Accredited

ABSTRACT

In this paper, I have investigated the reasons and strategic value of the Sui and Tang Dynasties’ attacks on Bisha Castle. The Daeheuksan(Daheishan in Chinese) Mountain Fortress, which is currently believed to be Bisa-seong, was located far from the coast and was not in a strategically important location that could defend the navy without cannons. In the Daewon Il Tong Ji, Daemyeong Il Tong Ji, Doksa Bang Yeo Gi Yo, and Seonggyeong Tong Ji, the historical geography books in pre-modern China, the area of Haicheng city, which is currently part of Anshan city in Liaoning Province and the lower reaches of the Liao River, was recorded as Bisa Castle. This is consistent with the war situation in which the Sui and Tang Dynasties occupied Bisa Castle. The reason Goguryeo tried to end the war with the Sui Dynasty when Lai Hu’er, naval admiral who attacked Goguryeo’s Pyongyang Castle in 612 and was defeated, captured Bisha Castle in 614 was because his navy could supply military supplies to the Sui Yang Emperor’s army attacking Liaodong Castle and the surrounding areas, suffered from a shortage of provisions in 612 and 613. Because the transportation of military supplies was not easy, Li Shimin, the second emperor of Tang dynasty called Taizong, changed the original plan in 644 to have Zhang Liang’s navy, which was planned to attack Pyongyang, load military supplies and land on the lower reaches of the Liao River. After landing on the lower reaches of the Liao River, he captured Bisa Castle. Zhang Liang’s corps, unable to supply the planned military provisions to the Tang army—largely because the Tang navy had suffered severe losses, including damage to several ships during transport—attempted to attack Geonan Fortress, a region with high grain production, but failed.

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