Beijing says it is facing its most severe Covid test yet after it saw the country's first coronavirus deaths in six months and cases continue to soar.
Three deaths have been reported in the Chinese capital since Saturday, bringing the country's official death toll to 5,229.
The latest fatalities have plunged parts of the city home to more than 21 million back into lockdown.
The deaths come amid rare protests over China's zero-Covid policy.
The controversial strategy - which aims to eradicate outbreaks - has seen seen millions locked down and citizens who have tested positive for the virus forcibly quarantined.
In Beijing, officials have already implemented a lockdown in the Haidian and Chaoyang districts, with shops, schools and restaurants closed.
Those travelling to the capital will also have to do tests for the first three days of their visit, and stay inside until they are given the all-clear.
Millions of other people across the vast country are also under Covid lockdowns, as cases continue to soar despite the efforts of authorities. On Sunday, 24,730 new cases were recorded, nearing the country's daily infection peak in April.