EntityQ1407142· pop 7· linked from 85 articlesUnderground Project 131Sign in to saveunderground tunnel system in Hubei province, ChinaConnectionsBeijingCityChineseEntityMao ZedongEntityWuhanCitygeographic coordinate systemEntityHubeiEntitypinyinEntityrenminbiEntityPeople’s Liberation ArmyEntitySino-Soviet splitEntityLin BiaoEntityXianningEntityprefecture-level cityEntityMetro-2EntityXian'an DistrictEntityUnderground CityEntityHuang YongshengEntityJoint Staff Department of the Central Military CommissionEntityStalin's bunkerEntityThird FrontEntityCategoriesCold War fortificationsCold War museums in ChinaMilitary and war museums in ChinaMilitary history of HubeiMilitary history of the People's Republic of ChinaMuseums in HubeiNuclear bunkers in ChinaNuclear history of ChinaTunnels in China