China’s Chengdu extends COVID lockdown as Shenzhen moves to tighten measures

China’s southern tech hub of Shenzhen said it will adopt tiered anti-virus restriction measures starting on Monday, while the southwestern metropolis of Chengdu announced an extension of lockdown curbs, as the country grapples with fresh outbreaks.

Shenzhen, which went into a weekend lockdown on Saturday, announced a new round of COVID-19 testing, and vowed to “marshal all available resources, mobilize all forces, and take all possible measures” to stamp out the…