光盘行动·guāngpán xíngdòng
Natural English: Clean Plate Campaign
A public initiative against food waste in restaurants and canteens. In this slogan, 光 means to finish or clear, while 盘 refers to the plate; the phrase also plays on 光盘, the Chinese word for an optical disc. The campaign is generally framed as awareness-building around ordering and finishing appropriate portions.
餐厅在墙上张贴了光盘行动的宣传海报。
The restaurant put up Clean Plate Campaign posters on the wall.
