A chef prepares the lunch at the dining hall in a primary school in Qingshui of Yunyang County, southwest China's Chongqing Municipality, Oct. 22, 2015. Fourteen districts and counties in Chongqing, including Yunyang, were enlisted as trial places for the nutrition improvement projects. Chongqing Municipality has invested 346 million yuan (about 54,5 million US dollars) to ensure the food safety and nutrition of 881,500 students. (Xinhua/Tang Yi)
