People visit the digital economy exhibition during the open day event of the fifth China-Arab States Expo in Yinchuan, Northwest China's Ningxia Hui autonomous region, Aug 21, 2021. The expo launched an open day event on Aug 21. [Photo/Xinhua]
People visit the green food exhibition during the open day event of the fifth China-Arab States Expo in Yinchuan, Northwest China's Ningxia Hui autonomous region, Aug 21, 2021. [Photo/Xinhua]
A visitor learns about a robot during the open day event of the fifth China-Arab States Expo in Yinchuan, Northwest China's Ningxia Hui autonomous region, Aug 21, 2021. [Photo/Xinhua]
People visit the green food exhibition during the open day event of the fifth China-Arab States Expo in Yinchuan, Northwest China's Ningxia Hui autonomous region, Aug 21, 2021. [Photo/Xinhua]
A visitor learns about medical equipment during the open day event of the fifth China-Arab States Expo in Yinchuan, Northwest China's Ningxia Hui autonomous region, Aug 21, 2021. [Photo/Xinhua]
