A major exhibition to commemorate the 40th anniversary of China's reform and opening-up shows the very first gavel used by the Chinese court since the founding of the People's Republic of China 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)