A visitor takes pictures of vintage cameras once used by Xinhua News Agency photographers which are displayed at a major exhibition to commemorate the 40th anniversary of China's reform and opening-up at the National Museum of China in Beijing, capital of China, Nov. 15, 2018. Vintage objects are displayed at the exhibition which opened here on Tuesday to show visitors the history, accomplishments, and experience of China's reform and opening-up. (Xinhua/Li Xin)