Residents line to get nucleic acid tests Monday in Taiyuan, North China’s Shanxi province. Cities across the province tightened movement restrictions to contain the current Covid-19 outbreak. Photo: IC Photo

A police officer guides a man to post stickers on a truck at a pandemic checkpoint on National Highway 108 on Wednesday in Yuncheng, Shanxi. These stickers are posted on vehicles passing through epidemic areas to prevent people from getting out of their vehicles and making contact with others. Photo: VCG

Disease control personnel inspect vehicles Wednesday at a checkpoint in Yuncheng. Photo: VCG

Electric rickshaws of SF Express are seen parked outside a closed store of the company in Yuncheng on Thursday. Photo: VCG

An STO Express store is seen closed in Yuncheng on Thursday. Shanxi has found multiple Covid-19 cases among the people working in the express delivery industry. From Wednesday to 6 p.m. Thursday, the province’s capital Taiyuan reported 61 cases at Yunda Express Logistics Park in Qingxu county. Photo: VCG

Buses are parked in Taiyuan on Wednesday as the local government suspended the city’s 250 bus lines that day. Photo: Wu Junjie/China News Service, VCG

Yingze Avenue in Taiyuan appears empty Monday due to the traffic control. The local government locked down six districts of the city on Wednesday. Photo: VCG

Few residents can be seen outside a shopping mall in Taiyuan on April 7, a day the city shuttered education institutions, childcare centers and entertainment venues. Photo: Wei Liang/China News Service, IC Photo

Police personnel in protective suits guard a traffic control checkpoint in Taiyuan on April 6. Photo: IC Photo

Residents queue for nucleic acid tests in Taiyuan on Monday. Shanxi reported 54 local cases on Thursday. Photo: VCG