Guests unveil a sailboat model at the opening ceremony of the third Shanghai Cooperation Organization (SCO) Youth Campus in Qingdao, east China's Shandong Province, July 16, 2018. The 2018 SCO Youth Campus opened Monday in Qingdao. More than 200 attendees from SCO member and observer states are at the event which runs till Sunday in Qingdao and Beijing. (Xinhua/Li Ziheng)