92 years ago today, on March 15, 1933 (February 20, 1933 lunar calendar), the Red Army broke the fourth "encirclement and suppression" of the Kuomintang. The people of the base area warmly celebrated the victory of the anti-" encirclement and suppression ". On March 15, 1933, the main force of the Kuomintang Middle Road Army that carried out the fourth" encirclement and suppression "of the Red Base Area was attacked in Huangpi. After being attacked, it changed its deployment and changed its" joint attack "combat policy to" intermediate breakthrough ". On the 15th, 6 divisions were divided into two echelons from the Yihuang area and set out from the Yihuang area. After breaking through the east, Ganzhu went straight to Guangchang, seeking the decisive battle of the main force of the Red Army. The Red Army first attracted the enemy's first four divisions in the direction of Guangchang with the Eleventh Army, and the main force was ambushed in the Caotaigang and Dongpi area. On the morning of the 21st, the main force of the Red Army suddenly advanced to Caotaigang, and the enemy's rear two divisions in the Dongpi area launched an attack. One day of fierce fighting, most of the enemy's eleventh division and one part of the ninth division were wiped out. The remaining enemy retreated in panic. The Red Army wiped out nearly 3 divisions of the enemy, captured more than 10,000 enemy men, handed down guns 10,000 the remaining branches, and lifted the crisis in the Soviet area. The central Soviet area was connected with the Soviet area in Zhejiang, Fujian and Jiangxi, and the Red Army quickly expanded to more than 80,000 people.