1969年10月,中国第一条地下铁道北京地铁一期工程建成通车,从此结束了中国没有地铁的历史。全长16.1公里的二期工程于1984年9月建成,并于1987年实现了地铁一号线和内环线的联网运营。1999年9月28日,全长12.7公里的地铁“复八线”(复兴门-八王坟)通车运营……随着一条条新线的落成,地铁运营线路在迅速延伸,从1987年的40公里发展为现在的114公里,地铁线路也由最初的一号线和内环线增加为现在的一号 In October 1969, the first subway project in China, the first phase of the Beijing Metro, was opened to traffic and ended its history of no subway in China. The second phase project with a total length of 16.1km was completed in September 1984 and the network operation of Metro Line 1 and Inner Ring Road was completed in 1987. On September 28, 1999, the 12.7-kilometer subway “Futian 8 Line” (Fuxingmen-Bawangfen) opened to traffic ... With the completion of a new line, the subway service lines are rapidly expanding from 1987 40 km of the development of 114 km now, the subway line from the original Line and the inner ring increased to the present number one