Karl Marx House in Trier, Germany to reopen on May 5

Photo taken on May 3, 2018 shows sandglasses presenting Karl Marx's residences in several cities at Karl Marx House in Trier, Germany. Karl Marx House, where Karl Marx was born, will be reopened to public on May 5 with new permanent exhibition, after a remodeling since Sept. 16, 2017. (Xinhua/Shan Yuqi)