There are 4,548 pieces or sets of cultural relics on permanent display in the museum, including 420 original state-level cultural relics, such as Karl Marx's Brussel IV notebook, Mao Zedong's coat and hat worn at the Proclamation of the People's Republic of China, the first Five-Star Red Flag of China raised by pressing the button, Mao Zedong's drafting and Zhou Enlai's handwritten inscription on the Monument to the People's Heroes, Li Dazhao's autobiography after his arrest and the gallows for his death, Chen Wangdao's translation of the "The Communist Manifesto" and the Old Summer Palace bronze heads.