© Provided by Xinhua YINCHUAN, Aug. 21 (Xinhua) -- At an exhibition booth at the ongoing fifth China-Arab States Expo, Yang Wanlong has been attracting a lot of domestic and foreign customers for his two products on display: nutritious Morchella fungi and high-quality activated carbon. Yang, 27, runs a cross-border e-commerce company, and this exhibition, which opened Thursday in the city of Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, is his first experience of such an event. His booth is in the cross-border e-commerce exhibition area, and he has made the most of the opportunity by making meticulous...