BEIJING (AP) — China has ordered the lockdown of as many as 13 million people in neighborhoods and workplaces in the northern city of Xi’an following a spike in coronavirus cases, setting off panic buying just weeks before the country hosts the Winter Olympics. State media say city officials ordered all residents to stay home unless they have a pressing reason to go out and suspended all transport to and from the city apart from special cases. One person from each household will be permitted out every two days to buy household necessities. Xi’an on Thursday reported another 63 locally transmitted cases over the previous 24 hours, pushing the city’s total to at least 211 over the past week.