Volunteers sing while relaying supplies amid lockdown in China's Xi'an City

Volunteers sang while relaying supplies to China's Xi'an City, which was locked down after an outbreak of Covid-19.

Footage taken in the northwestern city on January 3 shows the volunteers passing the supplies in a line while singing to keep up morale. Xi'an City, with a population of about 13 million, was placed under indefinite lockdown on December 23 following a flare-up of virus infections.