This photo shows an electric generator of a fast food store in Kiev, Ukraine, Dec. 4, 2024. Photo: Xinhua

This photo shows a store illuminated with charging device in Kiev, Ukraine, Dec. 4, 2024. Photo: Xinhua

People turn on the flashlights on the phone to light the way in an underground passage in Kiev, Ukraine, Dec. 4, 2024. Photo: Xinhua

A fruit stand is illuminated with a light bulb powered by charging battery in Kiev, Ukraine, Dec. 4, 2024. Photo: Xinhua

A pedestrian walks past an electric generator in Kiev, Ukraine, Dec. 4, 2024. Photo: Xinhua

People walk into a subway station in Kiev, Ukraine, Dec. 4, 2024. Photo: Xinhua