Orazbayeva Moldir, a Kazakh overseas student at Qingdao University, works as a volunteer of the 18th summit of the Shanghai Cooperation Organization (SCO) in Qingdao, East China’s Shandong province, June 8, 2018. The 18th SCO summit will be held in Qingdao on June 9-10. [Photo/Xinhua]

Ivanova Olga (1st R), a Russian overseas student at Qingdao University and a volunteer of the 18th summit of the Shanghai Cooperation Organization (SCO) , talks with a girl in Qingdao, East China’s Shandong province, June 8, 2018. The 18th SCO summit will be held in Qingdao on June 9-10. [Photo/Xinhua] 

Palaniappan Ganesh Ram, an Indian overseas student at Qingdao University and a volunteer of the 18th summit of the Shanghai Cooperation Organization (SCO), hands out tourist information booklets in Qingdao, East China’s Shandong province, June 8, 2018. The 18th SCO summit will be held in Qingdao on June 9-10. [Photo/Xinhua]