A medical worker registers information of an old woman who comes to receive a COVID-19 vaccine in Neikeng Town in Jinjiang City, southeast China's Fujian Province, Aug. 31, 2021. Photo: Xinhua

Elderly people take a free shuttle bus to a vaccination site at Shenzhen Village of Neikeng Town in Jinjiang City, southeast China's Fujian Province, Aug. 31, 2021. Photo: Xinhua

Elderly people take a free shuttle bus to a vaccination site at Shenzhen Village of Neikeng Town in Jinjiang City, southeast China's Fujian Province, Aug. 31, 2021. Photo: Xinhua

Elderly people from local villages queue up to get their blood pressure measured before receiving COVID-19 vaccines in Neikeng Town in Jinjiang City, southeast China's Fujian Province, Aug. 31, 2021. Photo: Xinhua

A medical worker inoculates an old woman with a dose of COVID-19 vaccine in Neikeng Town in Jinjiang City, southeast China's Fujian Province, Aug. 31, 2021. Photo: Xinhua