Eight etiquette volunteers pose for a photo at the media center for the 18th Shanghai Cooperation Organization (SCO) Summit in Qingdao, east China's Shandong Province, June 5, 2018. More than 20,000 volunteers have been mobilized to offer services for the summit, from assisting with guests' arrival and departure, translation, and media requests, to the operation of city functions such as transportation, telecommunication, and banks. (Xinhua/Li Ziheng)
Upper photo taken on Aug. 24, 2008 shows Jiang Shifa (R) and his wife Lian Shifang as volunteers for the Beijing 2008 Olympic Games Sailing event in Qingdao; Lower photo taken on June 5, 2018 shows the couple as volunteers for the Shanghai Cooperation Organization (SCO) Qingdao Summit, in Qingdao, east China's Shandong Province. Jiang, 74 years old and his wife, 72 years old, have been volunteers for over ten years after retired from work. The couple feel thrilled to be volunteers for the upcoming SCO Qingdao Summit ten years after they served as volunteers for the Beijing 2008 Olympic Games Sailing event in Qingdao. (Photo/Xinhua)
Jiang Shifa (R) and his wife Lian Shifang, volunteers for the Shanghai Cooperation Organization (SCO) Qingdao Summit, guide a tourist in Wendeng Road in Qingdao, east China's Shandong Province, June 5, 2018. Jiang, 74 years old and his wife, 72 years old, have been volunteers for over ten years after retired from work. The couple feel thrilled to be volunteers for the upcoming SCO Qingdao Summit ten years after they served as volunteers for the Beijing 2008 Olympic Games Sailing event in Qingdao. (Xinhua/Jiang Kehong)
Jiang Shifa (R) and his wife Lian Shifang, volunteers for the Shanghai Cooperation Organization (SCO) Qingdao Summit, give out handbooks at Mingxialu Community in Qingdao, east China's Shandong Province, June 5, 2018. Jiang, 74 years old and his wife, 72 years old, have been volunteers for over ten years after retired from work. The couple feel thrilled to be volunteers for the upcoming SCO Qingdao Summit ten years after they served as volunteers for the Beijing 2008 Olympic Games Sailing event in Qingdao. (Xinhua/Jiang Kehong)
Jiang Shifa (R) and his wife Lian Shifang, volunteers for the Shanghai Cooperation Organization (SCO) Qingdao Summit, gather at Mingxialu Community for training in Qingdao, east China's Shandong Province, June 5, 2018. Jiang, 74 years old and his wife, 72 years old, have been volunteers for over ten years after retired from work. The couple feel thrilled to be volunteers for the upcoming SCO Qingdao Summit ten years after they served as volunteers for the Beijing 2008 Olympic Games Sailing event in Qingdao. (Xinhua/Jiang Kehong)
Jiang Shifa (3rd R) and his wife Lian Shifang (2nd R), volunteers for the Shanghai Cooperation Organization (SCO) Qingdao Summit, guide passengers at a bus stop in Qingdao, east China's Shandong Province, June 5, 2018. Jiang, 74 years old and his wife, 72 years old, have been volunteers for over ten years after retired from work. The couple feel thrilled to be volunteers for the upcoming SCO Qingdao Summit ten years after they served as volunteers for the Beijing 2008 Olympic Games Sailing event in Qingdao. (Xinhua/Jiang Kehong)
Etiquette teacher Lu Min (1st R) instructs volunteers for the 18th Shanghai Cooperation Organization (SCO) Summit in Qingdao, east China's Shandong Province, June 5, 2018. More than 20,000 volunteers have been mobilized to offer services for the summit, from assisting with guests' arrival and departure, translation, and media requests, to the operation of city functions such as transportation, telecommunication, and banks. (Xinhua/Li Ziheng)
Eight etiquette volunteers for the 18th Shanghai Cooperation Organization (SCO) Summit practice in Qingdao, east China's Shandong Province, June 5, 2018. More than 20,000 volunteers have been mobilized to offer services for the summit, from assisting with guests' arrival and departure, translation, and media requests, to the operation of city functions such as transportation, telecommunication, and banks. (Xinhua/Li Ziheng)