Visitors view a distribution map of care facilities for old people of Beijing's Dongcheng District during the Beijing International Senior Industry Expo 2012 in Beijing, capital of China, Dec. 19, 2012. The three-day expo opened here on Wednesday, showcasing products and services for senior citizens. [Xinhua]

An old woman tries a test device during the Beijing International Senior Industry Expo 2012 in Beijing, capital of China, Dec. 19, 2012. The three-day expo opened here on Wednesday, showcasing products and services for senior citizens. [Xinhua]