Fang Wen, a 24-year-old Nigerian student at the Southwest University, southwest China’s Chongqing municipality, sterilizes elevator buttons. Many foreign students in Chongqing have been spreading coronavirus prevention knowledge, giving out medical masks and sterilizing the campus amid the epidemic. (Xinhua/Wang Quanchao)

Gina from the Democratic Republic of the Congo has been a volunteer in a village in north China’s Hebei province since the pneumonia outbreak began. She married a local villager in 2017. (Xinhua/Xu Jianyuan)

An Iranian businessman puts up notices on coronavirus prevention in several languages for foreign residents in a community in Yiwu, Zhejiang province. The 55-year-old has been doing business in Yiwu since 2003 and volunteered to purchase and deliver daily necessities to the Chinese and foreign residents in the neighborhood and spread coronavirus prevention knowledge. (Xinhua/Zheng Mengyu)

A Pakistani doctor helps his wife adjust her medical mask in preparation for epidemic prevention and control volunteer work at an expressway exit in Wenzhou, Zhejiang province. (Xinhua/Weng Xinyang)