The central Chinese city of Zhengzhou announced on Tuesday it would impose new COVID-related movement curbs for May 4-10.

The new measures would be subject to adjustment after May 10, in accordance with the COVID-19 outbreak situation, the notice said.

Schools in the main city district will go online, while employees with government organisations and companies in the area must work from home during that period, according to a statement on the city’s official WeChat account.

Meanwhile, China’s commercial capital of Shanghai was dealt a blow on Monday as authorities reported 58 new COVID-19 cases outside areas under strict lockdown, while Beijing pressed on with testing millions of people on a May Day holiday few were celebrating.

Tough coronavirus curbs in Shanghai have stirred rare public anger, with millions of the city’s 25 million people stuck indoors for more than a month, some sealed inside fenced-off residential compounds and many struggling for daily necessities.