
Visitors pose for photos in front of the National Museum of China, where a major exhibition to commemorate the 40th anniversary of China's reform and opening-up is held, in Beijing, capital of China, Nov. 14, 2018. (Xinhua/Luo Xiaoguang)

Visitors view the sand table of Shanghai's Lujiazui area during 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. 14, 2018. (Xinhua/Li Xin)

People visit 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. 14, 2018. (Xinhua/Luo Xiaoguang)

People visit 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. 14, 2018. (Xinhua/Meng Dingbo)

Visitors take photos in front of the National Museum of China, where a major exhibition to commemorate the 40th anniversary of China's reform and opening-up is held, in Beijing, capital of China, Nov. 14, 2018. The exhibition opened here on Tuesday. (Xinhua/Meng Dingbo)

Students visit a major exhibition to commemorate the 40th anniversary of China's reform and opening-up held at the National Museum of China in Beijing, capital of China, Nov. 14, 2018. The exhibition opened here on Tuesday. (Xinhua/Luo Xiaoguang)

Visitors view exhibits at a major exhibition to commemorate the 40th anniversary of China's reform and opening-up held at the National Museum of China in Beijing, capital of China, Nov. 14, 2018. The exhibition opened here on Tuesday. (Xinhua/Li Xin)

Visitors view exhibits at a major exhibition to commemorate the 40th anniversary of China's reform and opening-up held at the National Museum of China in Beijing, capital of China, Nov. 14, 2018. The exhibition opened here on Tuesday. (Xinhua/Shen Bohan)

A student poses for photos at a multimedia interactive zone during a major exhibition to commemorate the 40th anniversary of China's reform and opening-up held at the National Museum of China in Beijing, capital of China, Nov. 14, 2018. The exhibition opened here on Tuesday. (Xinhua/Shen Bohan)