Feature: Low-key experiment changing how food aid works in south China's Shenzhen

SHENZHEN, Feb. 5 (Xinhua) -- When evening falls in a residential block in Futian District of the city of Shenzhen, south China's Guangdong Province, a phone tends to prove very useful if you are hungry.

A green metal cabinet on a sidewalk can be seen glowing in the fading dusk light. Via a scan of a QR code, its doors slide open and reveal neatly packed food such as vegetables, fruit and bread -- free for the ta