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ApopularscienceexhibitionDuringthewinterholiday,IwasavolunteerforpopularscienceexhibitioninGuangzhou.Thepopularscienceexhibitionisabouttheurbansewagetreatment.Weshowedthecitizenswithsomesimplesewagetreatmentprocess、ecologicalagriculture、Haizhuwetland.Wealsotaughtchildrenaboutrubbishclassificationandsomemagicaboutscience.OnMarch21toMarch31,thepopularscienceexhibitionisshowinginthelibrary.thanks