As Shanghai and some other areas reported a record number of symptomatic COVID-19 cases on Saturday, China imposed more restrictions to keep up its "dynamic clearance" approach to stamp out Omicron.
A 14-day lockdown has been announced in Zhengzhou Airport Economic Zone, a central Chinese manufacturing area that includes Apple Inc supplier Foxconn.
Meanwhile, in northwestern China, the city of Xian on Friday urged residents to avoid unncessary trips outside their residential compounds and encouraged companies to have employees work from home or live at their workplace.
However, an official stated that lockdown will not be imposed in Xian. The lingering and widening restrictions highlight broad supply chain disruptions that are seen likely to lead to delays in shipments from companies including Apple.