All 1.6 million residents of Daxing must not leave Beijing unless they have received special permission from the authorities and tested negative for Covid-19 in the past three days, the district said.
Meetings of 50 or more people in the district have been banned, while “weddings should be postponed and funerals simplified,” the district government said.
It also ordered all kindergarten, primary and secondary students in the district to study at home. Residents of five Daxing neighbourhoods where the cases were detected were ordered to remain indoors. Daxing includes one of the city’s two international airports.
China reported 103 new cases on Wednesday, including the seven in Beijing.
The outbreaks, including in neighbouring Hebei province, have put China on high alert for a potential wave of cases ahead of the upcoming Lunar New Year holiday.