Photo taken on June 12, 2019 shows the Qingdao multimodal transportation center at a demonstration zone for China-SCO local economic and trade cooperation in Jiaozhou City, east China's Shandong Province. (Xinhua/Li Ziheng)

People visit an exhibition hall of the Qingdao multimodal transportation center at a demonstration zone for China-SCO local economic and trade cooperation in Jiaozhou City, east China's Shandong Province, on June 12, 2019. (Xinhua/Li Ziheng)

Photo taken on June 12, 2019 shows the containers at the Qingdao multimodal transportation center at a demonstration zone for China-SCO local economic and trade cooperation in Jiaozhou City, east China's Shandong Province. (Xinhua/Li Ziheng)