Students learn about oral hygiene ahead of national day for dental care
(Xinhua) Updated：2017-09-22
A medical staff member shows students the correct way to brush teeth in Taolin county central primary school in Donghai village, East China's Jiangsu province, Sept 18, 2017. The country's "national day for dental care" is marked on Sept 20 every year. [Photo by Zhang Zhengyou/Asianewsphoto]
