Visitors inquire about Pakistani commodities displayed at the Shanghai Cooperation Organization (SCO) Countries Commodity Fair in Xi'an, capital of northwest China's Shaanxi Province, Sept. 24, 2015. The 18th Shanghai Cooperation Organization (SCO) Summit is scheduled for June 9 to 10 in Qingdao, a coastal city in east China's Shandong Province. (Xinhua/Liu Xiao)