1. Old City ChangjiangThe old city Changjiang-address: Changjiang Township, the city of BAC Giang (right next to the Changjiang road).The Changjiang was built from the year 1400, the Ming dynasty built them to do the protection, defense. Meanwhile, the relief only by high ground approximately 4 m wide, 450m, $ 600 m in length. Through the ups and downs of history, now thành has destroyed most of the remaining few, only 15 m wide, 1 m, depth: rows of ditches surrounding the destroyed most.
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