Visitors view an exhibition in commemoration of the 120th anniversay of Zheng Zhenduo's (1898-1958) birth at National Museum of Classic Books in Beijing, capital of China, Dec. 19, 2018. More than 70 pieces of Zheng's personal belongings and collections are on display. Zheng Zhenduo was a Chinese journalist, writer, archaeologist and scholar. (Xinhua/Yin Gang)