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In this brief video, the speaker introduces the Wall of Nantou, an ancient fortification in Shenzhen. He notes that the wall’s origins date back to 331 CE and that its construction was completed by the late 13th century. The primary purpose of the wall was defensive, intended to block river‑borne invaders. While narrating, the speaker walks beneath a remaining walkway of the wall, emphasizing its age and historical significance, and invites viewers to appreciate the site’s heritage.










