Guo Tongwang, a 91-year-old forest keeper, has lunch in his office in Maotuan Village of Dongkeng Township, Jingbian County, northwest China's Shaanxi Province, Aug. 23, 2012. China had 190 million people at or above the age of 60 at the end of last year, according to the China National Committee on Ageing (CNCA). It is estimated that the figure will top 200 million next year and by 2050, one third of the Chinese population will be aged over 60. China is the only country in the world which has more than 100 million people aged 60 or above. (Xinhua/Wang Song)

File photo taken on Oct. 22, 2010 shows an old lady doing exercises at a rehabilitation center in Shizuishan, northwest China's Ningxia Hui Autonomous Region. China had 190 million people at or above the age of 60 at the end of last year, according to the China National Committee on Ageing (CNCA). It is estimated that the figure will top 200 million next year and by 2050, one third of the Chinese population will be aged over 60. China is the only country in the world which has more than 100 million people aged 60 or above. (Xinhua/Wang Song)