China has introduced strict health checks for passengers flying in after the number of imported cases spiked for the fourth consecutive day.
Beijing Capital International Airport has cordoned off a special zone for all international flights, with compulsory 14-day quarantine for all passengers.
According to officials, 20 of the 21 new cases on Monday were foreign travellers.
Wuhan, following the directives set by Beijing, is now telling travellers to pay for the quarantine.
Meanwhile, Japan also ordered self-quarantine for all travellers from Europe, including its own citizens, with Hong Kong introducing similar measures on Thursday.
This comes as more than 180,000 cases have been reported worldwide, with 79,886 recoveries and 7,174 deaths.
President Donald Trump said the US was considering "winding down" its military operation against Iran, as Iran and Israel traded attacks on Saturday and Iranian media said the nuclear enrichment facility in Natanz had been attacked.
Robert Mueller, the no-nonsense former FBI chief who documented Russia's interference in the 2016 US election and its contacts with Donald Trump's campaign but opted not to bring criminal charges against a sitting president, has died at age 81.
Fourteen people died and 25 were seriously injured in a fire at a car parts factory in the South Korean city of Daejeon, fire authorities said on Saturday.
Russian attacks on Ukraine killed two people in Zaporizhzhia and left most of the northern region of Chernihiv without power on Saturday, Ukrainian officials said.