The country has also deployed a range of smartphone apps to track the whereabouts of people to quickly identify possible cases.
Wearing a mask is mandatory in supermarkets, cinemas or on public transport, and many choose to wear one while outdoors as well, as a safeguard against the virus.
China has not reported any locally transmitted infections in recent days.
(Writers & Editors: EHL-PRW/BYS/MTP, Agence France-Presse)
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