euters) - The southwestern
s down during four-day citywide testing Shenzhen districts with over 15 mln residents limits business Most curbs in big Chinese cities intended for a few days SHENZHEN, China, Sept 1 (Reuters) - The southwestern Chinese metropolis of Chengdu announced a lockdown of its 21.2 million residents as it launched four days of citywide COVID-19 testing, as some of the country's most populous and economically important cities battle outbreaks. Residents of Chengdu, the capital of Sichuan province, were ordered to stay home from 6 p.m. on Thursday, with households allowed to send one person per day to shop for necessities, the city government said in a statement. Chengdu, which reported 157 domestically transmitted infections on Wednesday, is the largest Chinese city to be locked down since Shanghai in April and May. It remained unclear whether the lockdown would be lifted after the mass testing ends on Sunday. Other major cities including Shenzhen in the south and Dalian in the northeast