Zibo has become a social media star for its distinctive barbecue style. Now the city is overrun with visitors.

Star sellers can amass huge followings and eye-popping fortunes, through a format that mixes consumerism and entertainment. But competition is fierce, and the government is...

It was not clear, however, whether travelers would still be required to take antigen tests.

From Jan. 8, visitors will be required to show only a negative P.C.R. test taken within 48 hours. The restrictions had cut the country off...