This is a festival of children in VietNam. For more information go to website: http://www.vietnam1cycle.com/2014/08/mid-autumn-festival-158-lunar-year.html
Chinese people eat mooncakes 月饼 (yuè bǐng) during 中秋节 (zhōng qiū jié) - Mid-Autumn Festival. 2 popular ingredients for mooncake filling are 莲蓉(lián róng) - lotus seed paste and 豆沙 (dòu shā) - red bean paste.