Dehghani introduces prevention measures to someone who just returned to the community from abroad, on March 6. ZHENG MENGYU/XINHUA

During the conversation, a woman was heading towards the apartment with two pet dogs. The man explained that it was his wife, who just walked their dogs. She had traveled to Italy and flown to Shanghai on Feb 25. She returned to the community two days later but was required to stay at home for a 14-day self-quarantine.

"For the sake of everyone's safety, you are supposed to stay at home for four more days. Please don't go out during this period," Hamid explained to the couple very patiently.

On Feb 19, a father and a daughter from Seoul, the Republic of Korea, returned to Yiwu. Hamid and community workers also visited the two of them after a 14-day quarantine. They reminded them that besides monitoring their health, they were encouraged to reduce physical contact with other Korean friends who came back to China for the time being.

He also told them that the local government would arrange for transportation and designated hotels for medical observation for people from the ROK, and he wanted the father and daughter to spread the information among their Korean circle of friends.

Apart from visiting homes, Hamid also purchases things, sends daily necessities, publicizes epidemic prevention and control information and participates in night patrols.

In Jimingshan community, there are a total of 39 foreign volunteers who have taken part in epidemic prevention and control duties. Hamid hopes that more foreigners join the team after they are released from medical quarantine.

Leaving the business to his Chinese wife, Hamid spends most of his time helping others in the community, but he is also worried about the epidemic situation in his own country.

He said he bears the responsibility to tell his Iranian compatriots about his experience in China. "I hope the anti-epidemic experience in China can help my country pull through," Hamid says.

"The virus knows no borders. I'm just offering a little help within my capabilities," he adds.