Overseas input, intensive outbreak. At the press conference held by the Xiamen Municipal Government, the epidemic prevention and control organization said that the origin of the epidemic was imported cases from other places, which broke out and spread in crowded places such as factories. It had spread for 2-3 generations before the first report of cases, and the epidemic situation was severe and complicated. As of August 26, 2022, there were no new cases in Xiamen for five consecutive days, and all of them have returned to low-risk areas and turned to normal prevention and control.