山河铭记 以祖国繁荣昌盛告慰志愿军先烈

Core Points - The article commemorates the 75th anniversary of the Chinese People's Volunteer Army crossing the Yalu River to aid North Korea during the Korean War [1] - It highlights the historical significance of various bridges over the Yalu River, which played crucial roles during the conflict [1][9] Summary by Sections - Historical Context - The Chinese People's Volunteer Army crossed the Yalu River 75 years ago to participate in the Korean War [1] - The article reflects on the impact of the war and the sacrifices made by soldiers [9] - Key Infrastructure - The Friendship Bridge was bombed by over 100 American fighter jets between November 8 and 14, 1950, resulting in its destruction [1] - The second railway bridge over the Yalu River, measuring 350 meters, was completed in May 1951, allowing for significant military logistics [5] - The article mentions the construction of various bridges, including the Ma Shicun floating bridge and the He Kou broken bridge, which were also targeted during the war [6][8][9] - Modern Transformation - The Yalu River area has transformed from a war zone into a vibrant tourist destination, with many inns and boat tours now available [9] - The current state of Dandong is described as a modern and lively city, contrasting sharply with its war-torn past [9]