Volunteers Wang Yandong (2nd R) and Wang Siqi(1st R), students from Shanghai International Studies Univesity, help the visitors at the first China International Import Expo (CIIE) in Shanghai, east China, Nov. 7, 2018. More than 5,400 volunteers are serving at the CIIE which runs from Nov. 5 to Nov. 10, 2018. (Xinhua/Sadat)