Definition of "Chifeng"

More than 17 million people near Beijing are under stay-at-home orders. […] Chifeng, a city in the northern region of Inner Mongolia, announced on Friday that it was shifting to “wartime” footing after discovering that more than 3,600 people from the two Hebei cities had visited in recent days.

2021 January 9, Amy Qin, Amy Chang Chien, “Officials Say Reports of New U.S. Coronavirus Variant Are Inaccurate”, in The New York Times‎, archived from the original on 09 January 2021‎