![Visitors look at the model of locomotive 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/0b3eac1b13044d599674410d4020f654.jpg)
Visitors look at the model of locomotive 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. 24, 2018. (Xinhua/Yin Gang)
![A visitor displays a customized postcard at the exhibition area of Xinhua News Agency 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/1ff6b52695224b67b2fdbe3cbfd7caa3.jpg)
A visitor displays a customized postcard at the exhibition area of Xinhua News Agency 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. 24, 2018. (Xinhua/Yin Gang)
![A visitor takes photos of commemorative coins 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/fa068cecb2c4434a8f5c8e2618315de3.jpg)
A visitor takes photos of commemorative coins 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. 24, 2018. (Xinhua/Yin Gang)
![Visitors look at the commemorative coins 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/ffb3fd27f8df4d9983b63a7d5a0f9b99.jpg)
Visitors look at the commemorative coins 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. 24, 2018. (Xinhua/Yin Gang)
![Visitors view photo gallery made by Xinhua News Agency 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/ce819ce7b7c84fe7b356cf612ab7c582.jpg)
Visitors view photo gallery made by Xinhua News Agency 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. 24, 2018. (Xinhua/Yin Gang)
![Visitors experience intelligent calligraphy writing desk 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/962b478abc92418191d7c7da73e9f1b7.jpg)
Visitors experience intelligent calligraphy writing desk 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. 24, 2018. (Xinhua/Yin Gang)
![Spacesuit is displayed 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/288594ddfebd4c35a2596a70e5474a48.jpg)
Spacesuit is displayed 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. 24, 2018. (Xinhua/Yin Gang)
![A staff member shows a phone with a foldable display screen 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/9030afabfe4d44cb831608a503ea3929.jpg)
A staff member shows a phone with a foldable display screen 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. 24, 2018. (Xinhua/Yin Gang)
![Visitors experience customized postcard making at the exhibition area of Xinhua News Agency 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/b1930767889f492189818bba82634786.jpg)
Visitors experience customized postcard making at the exhibition area of Xinhua News Agency 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. 24, 2018. (Xinhua/Yin Gang)
![Visitors experience customized postcard making at the exhibition area of Xinhua News Agency 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/bba744ea133d4aa8a353e789e5baf347.jpg)
Visitors experience customized postcard making at the exhibition area of Xinhua News Agency 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. 24, 2018. (Xinhua/Yin Gang)
![A visitor looks at the model of drilling platform in Liwan 3-1 gas field 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. 24, 2018. (Xinhua/Yin Gang)](http://www.ecns.cn/hd/2018/11/25/cdfe9083b484458db4e4df3e39b0ff69.jpg)
A visitor looks at the model of drilling platform in Liwan 3-1 gas field 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. 24, 2018. (Xinhua/Yin Gang)