HONG KONG, July 28, 2016 (Xinhua) -- Two senior citizens walk on a street in Hong Kong, south China, July 28, 2016. People in Hong Kong enjoy world's longest life expectancy, as 81.24 years old for men and 87.32 years old for women, according to statistics from Japan's Ministry of Health, Labor and Welfare. (Xinhua/Wang Shen)
