Ruijin (Chinese: 瑞金; pinyin: Ruìjīn) is a county-level city of Ganzhou in the mountains bordering Fujian Province in the south-eastern part of Jiangxi Province.

[1]: 94  In the late-1920s, the Nationalists forced the Communists out of the Jinggang Mountains, sending them fleeing to Ruijin and the safety of its relative isolation in the rugged mountains along Jiangxi-Fujian border.

The Communists withdrew in 1934 on the Long March after being surrounded again by the Nationalists.

[citation needed] During the Cultural Revolution, the Ruijin Massacre in September and October 1968 killed over 300 people in the county.

[2] On 22 May 2016 the BBC reported that four cars fell into a sinkhole in Ruijin City.