Visitors scan a QR code with WeChat to learn more about a product at the 6th China-Russia Expo on June 15. [Photo/Xinhua]
A visitor samples a VR (virtual reality) device at the 6th China-Russia Expo on June 15. [Photo/Xinhua]
Visitors interact with a robot at the 6th China-Russia Expo on June 15. [Photo/Xinhua]