This was a battle in the Long March of the Chinese Red Army of Workers and Peasants, which took place on May 25th, 1935. The story goes like this: the Central Red Army troops successfully crossed the Dadu River in Anshunchang, Sichuan, and went north along the left bank of the Dadu River. The main force went north from Anshunchang along the right bank of Dadu River. Twenty-two commandos, including Liao Dazhu, the company commander of Red 4 Regiment 2, took the bridge along the iron chain covered with bullets and fire walls, and besieged and occupied Luding with the left bank troops. The main force of the Central Red Army then crossed the natural barrier from Luding Bridge, crushing Chiang Kai-shek's attempt to annihilate the south of the Red Army Dadu River.