Vì Sao Kênh Đào PANAMA Việt Nam Là Kỳ Quan Nhân Tạo Của Thế giới

The Nghia Hung Canal in Nam Dinh, Vietnam, is a strategic 1km waterway connecting the Day and Ninh Co rivers. Often called the \"Mini Panama,\" it utilizes a sophisticated lock system to overcome water level differences and prevent saltwater intrusion, drastically reducing travel time from 8 hours to 20 minutes and significantly lowering fuel costs for transport ships.