"The Dong Feng 4 (Chinese: \u4E1C\u98CE4, meaning \"East Wind\") or DF-4 (also known as the CSS-3) is a two-stage Chinese Intercontinental ballistic missile with liquid fuel (Nitric acid/Unsymmetrical dimethylhydrazine). It was thought to be deployed in limited numbers in underground silos beginning in the 1970s and early 1980s. The Dong Feng 4 has a takeoff thrust of 1,224.00 kN, a takeoff weight of 82000 kg, a diameter of 2.25 m, a length of 28.05 m and a fin span of 2.74 m."@en . "28.05"^^ . . "DF-4/CSS-3"@en . . "8.2e+07"^^ . "2.25"^^ . . .