![CHINA-NINGXIA-CHINA-ARAB STATES EXPO (CN)](136591593_15047668931271n.jpg)
Delegates attend the signing ceremony during the China-Arab States Business Summit 2017 in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Sept. 6, 2017. The four-day China-Arab States Expo began Wednesday in Yinchuan. (Xinhua/Wang Peng)