China’s COVID-19 outbreaks eased, though the threat of lockdowns remains as infections continue to be found in key cities.

Beijing reported 55 cases on Wednesday, down from 69 on Tuesday. The capital has locked down some areas of the Fengtai district for seven days and is starting three rounds of mass testing across four districts as authorities race to stamp out infections.

In nearby Tianjin, where an outbreak in January disrupted global auto giants Toyota and Volkswagen, 33 new cases were found on Wednesday, down from 55 on Tuesday. Among measures announced late Wednesday to help stop the spread, two residential buildings in the city were put under lockdown and college entrance exams scheduled for Saturday postponed until June 12, CCTV reported.