The 21st China Beijing International High-Tech Expo opened in Beijing, capital of China, May 17, 2018.
Xinhua丨Updated: May 18, 2018
×
Staff members show how to work inside an aircraft cockpit during the 21st China Beijing International High-Tech Expo in Beijing, capital of China, May 17, 2018. The four-day expo opened on Thursday. [Photo/Xinhua]