A staff member helps a tourist with foreign currency exchange at the exit hall of Heihe Port in Heihe, Northeast China's Heilongjiang province, Jan 30..

Citizens participate in an event held in Shanghai on Aug 14 to learn more about ecological and environmental protection. [Photo provided to chinadaily..

Visitors interact with a robot from Unitree Robotics during the sixth China International Consumer Products Expo (CICPE) in Haikou, South China's Hain..