The Long March rockets are a family of expendable launch system rockets operated by the China National Space Administration (CNSA). Development and design falls under the auspices of the China Academy of Launch Vehicle Technology (CALT). In English, the rockets are abbreviated as LM- for export and CZ- within China, as "Chang Zheng" (长征) which means Long March in Chinese pinyin. The rockets are named after the Chinese Red Army's 1934–35 Long March, during the Chinese Civil War.