BEIJING, June 5, 2016 (Xinhua) -- A man explains to his son by the model of a large gas field discovered in southwest China's Anyue County, during an exhibition on China's science and technology achievements during the 12th Five-Year Plan period (2011-2015) in Beijing, capital of China, June 5, 2016. The exhibition lasts from June 1 to 7 at Beijing Exhibition Center. (Xinhua/Chen Yehua)