China's Tianjin completes mass testing for 14 million people
Tianjin Municipality, a half-hour bullet train ride from China's capital Beijing, found 10 new cases. It has conducted mass testing on its 14 million residents, and authorities have asked people not to leave the city unless necessary. Wu Bin reports that the source of the virus in the city is still under investigation. All reported cases here are showing mild symptoms, with many even being asymptomatic.