Location: The Chi Lang Border is located in Chi Lang District, Lang Son Province, and 110km from Hanoi and 60km from the Sino-Vietnamese border.
Characteristics: The defile consists of a valley surrounded by high mountains and through which runs the Thuong River.
In the past, in this area that King Le Hoan defeated the Chinese Sung troops in 981 and killed all the enemies. In 1076, Prince Consort Than Canh Phuc set a front line against 300,000 Sung enemies. Led by Quach Quy in 1285, Nguyen Dia Lo killed traitor Tran Kien in the second National Resistance against Yuan-Mongol invaders. In 1427, Lam Son righteous army killed invader leader Lieu Thang, caught Hoang Phuc, killed 10,000 Ming enemies and overthrew all their maneuvers.
Now Chi Lang Defile is considered a historical vestige with imposing landscape where visitors stop to enjoy the natural scenery.
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