A visitor takes pictures of a vintage bike and sewing machine 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/Shen Bohan)