
A staff worker dumps residue in a kitchen waste bin in Yantian District of Shenzhen, south China's Guangdong Province, April 28, 2017. (Xinhua/Mao Siqian)

A staff worker dumps residue in a kitchen waste bin in Yantian District of Shenzhen, south China's Guangdong Province, April 28, 2017. (Xinhua/Mao Siqian)