XINHUA VIA AP
A medical worker from Zhejiang Province takes a swab sample from a resident for nucleic acid test at a COVID-19 testing site in Pudong District of east China's Shanghai, Monday, March 28. Chinese authorities sought to reassure companies and jittery investors on Tuesday as a two-phase lockdown of Shanghai's 26 million people entered its second day, casting an unusual quiet over the normally bustling center of finance, manufacturing and trade.