Volunteers of the third China International Import Expo (CIIE) talk with each other in Shanghai, east China, Oct. 14, 2020. More than 30 volunteers from Shanghai Publishing and Printing College have been busy making credentials for people who will attend the third CIIE since late September. (Xinhua/Liu Ying)

Volunteers of the third China International Import Expo (CIIE) make vehicle passes in Shanghai, east China, Oct. 14, 2020. More than 30 volunteers from Shanghai Publishing and Printing College have been busy making credentials for people who will attend the third CIIE since late September. (Xinhua/Liu Ying)

Volunteers of the third China International Import Expo (CIIE) make credentials for staff members in Shanghai, east China, Oct. 14, 2020. More than 30 volunteers from Shanghai Publishing and Printing College have been busy making credentials for people who will attend the third CIIE since late September. (Xinhua/Liu Ying)

Volunteers of the third China International Import Expo (CIIE) make vehicle passes in Shanghai, east China, Oct. 14, 2020. More than 30 volunteers from Shanghai Publishing and Printing College have been busy making credentials for people who will attend the third CIIE since late September. (Xinhua/Liu Ying)