Twin girls Liu Yuting (R) and Liu Yuyao take free lunch at the No. 4 Primary School in Jianhe county of Qiandongnan Miao and Dong autonomous prefecture, Southwest China's Guizhou province, Sept 6, 2017. Free lunch project has improved diets of rural students in Guizhou since 2012. The nutritious lunches helped address malnutrition among students in remote and poor areas. [Photo/Xinhua]