sentences:  The rest of the building is entirely new-build, dating from the 1979 construction of Beijing Subway Line 4, which required the rest of the old station to be demolished.The historic facade was then reconstructed, in mirror-image, on the opposite (right hand) side of the clock tower.In October 2010, Beijing Railway Museum was renamed to the Zhengyangmen Branch (正阳门馆) of the China Railway Museum.