Introduction to the Battle of Southwest Shandong: In 1947, Liu Bocheng and Deng Xiaoping led the Shanxi-Hebei-Shandong-Henan Field Army to break through the natural dangers of the Yellow River and advance into southwest Shandong, launching the famous Battle of Southwest Shandong. Among them, the Battle of Yangshan was one of the most important battles in the Battle of Southwest Shandong. The most critical and brutal battle. The victory of the Battle of Southwest Shandong opened the way for the People's Liberation Army to advance into the Central Plains, leap into the Dabie Mountains, and lead the war to the Kuomintang-controlled areas. It opened the way for the Chinese People's Liberation Army to shift from strategic defense to strategic offensive, and marked a great turning point in the Chinese People's Liberation War. , creating favorable conditions for winning national victory.