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Beijing residents must prove they are Covid negative to enter public spaces in a major tightening of restrictions in the Chinese capital.

It is not clear how long the new measures will last, but the announcement comes as the city begins a five-day public holiday. Proof of a negative Covid test will also be required to board public transport from 5 May.

China is battling a resurgence in Covid cases.In contrast to many other countries, China is pursuing a zero-Covid strategy with the aim of eradicating the virus from the country completely. But the measures, such as strict lockdowns, have led to rare shows of public anger against the authorities.