Today, 75 years ago, on April 16, 1950 (February 30, 1950), the battle for the liberation of Hainan Island began. Our army broke the boats together and crossed the Strait of Jones. On April 16, 1950, the People's Liberation Army still relyed on a small wooden sailboat and the National Party's sharp sea and air defense operation, crossed the Strait of Jones, and on the morning of May 17, broke the "Berlin Defense Line", victoriously completed the enemy landing in the north of Jones Island. Then, the People's Liberation Army advanced deeper into the army, successively liberated most of the coastal towns, controlled the coastline of the Minister of Hainan Island up to 400 miles north. On April 30, the People's Liberation Army liberated