1927年10月,毛泽东率领湘赣边界秋收起义的队伍上了井冈山,开辟了中国第一块农村革命根据地。1928年4月底,由朱德、陈毅率领南昌起义保存下来的部队和湘南农军到达井冈山,与毛泽东领导的工农革命军会师,并于同年5月4日在宁冈砻市正式成立了中国工农革命军第四军（随后改称“中国工农红军第四军”,简称“红四 In October 1927, Mao Zedong led the team of the Autumn Harvest Uprising at the border with Hunan and Jiangxi onto Jinggangshan and opened up China’s first rural revolutionary base. At the end of April 1928, the troops and the Hunan Southern Peasant Army led by Chu Teh and Chen Yi led by the Nanchang Uprising arrived in Jinggangshan and joined hands with the Workers ’and Peasants’ Revolutionary Army under Mao Zedong’s leadership. On April 4 of the same year, they officially established the Chinese worker-peasant revolution Fourth Army (subsequently renamed the “Fourth Army of the Red Army of Chinese workers and peasants”, referred to as “red four.”