A staff member of the China Construction Third Engineering Bureau Co., Ltd. displays 3D printing model during a caring activity in Anning District of Lanzhou, northwest China's Gansu Province, Aug. 27, 2020. A caring activity for left-behind children in rural areas was held at a construction site of a women and children's hospital in Lanzhou on Thursday. Experts and volunteers conducted safety knowledge education to children and communicated with parents who are migrant workers here on family education and communication between parents and children. (Xinhua/Chen Bin)
