Residents of Southwest China's Chongqing take the subway on December 5, 2022. The city resumed subway service from 6:30 am that day and residents needed only to present their green health code to access public transit services. Photo: cnsphoto

Residents of Southwest China’s Chongqing take the subway on December 5, 2022. The city resumed subway service from 6:30 am that day and residents needed only to present their green health code to access public transit services. Photo: cnsphoto