Liu Wei, a volunteer in the driving team of Didi Chuxing, is on his way to help medical staff commute on Feb 18, 2020. [Photos: chinadaily.com.cn]

Staff members of Didi Chuxing disinfect a car on Feb 18, 2020.

Protective film seen in a car booked through Didi Chuxing on Feb 20, 2020, to prevent droplet transmission.

Cleaners disinfect a platform at Dongdan subway station on Feb 20, 2020.

A conductor is seen at the Dongdan subway station on Feb 20, 2020.

A deliveryman waits for customers to pick up parcels at the gate of a housing estate on Feb 18, 2020.

A deliveryman waits for customers' takeaway at Wangfujing on Feb 7, 2020.

A staff member at work at Beijing Railway Station on Feb 16, 2020.

Travelers seen wearing face masks and shields at Beijing South Railway Station on Feb 2, 2020.

Travelers to Beijing at Beijing South Railway Station on Feb 2, 2020.

Residents exercise at Shichahai park on Feb 9, 2020.

A resident walks her dogs in Zhonggulou Square on Feb 19, 2020.

A housing estate is under closed-off management on Feb 12, 2020.

A sculpture at Qianmen with a face mask on Feb 20, 2020.

Few people traveling during rush hour at Dongdan subway station on Feb 20, 2020.

A family looks at the inside of a shopping mall on Feb 7, 2020.