The worldwide theme for World Environment Day on Wednesday is "Think, Eat, Save".

The government has already officially backed the Clean Your Plate campaign, or guangpan xingdong in Chinese, which was started in January by micro-bloggers in a bid to stop food waste, by calling on officials to cut down on extravagant banquets paid for with public funds.

It is necessary for all of us to finish what is on our plates, especially those who host guests at public expense, to reduce the staggering amount of food that is wasted.