Dewey Decimal Classification - Children's Encyclopedia (Ages 8-11) The Dewey Decimal Classification (DDC) is a system for organizing the contents of a library. It is commonly known as the Dewey Decimal System. It helps people find nonfiction books on any subject in the library.
Beijing â The Capital of China. Urban Population: 18.8 million. As the capital of China, Beijing ranks as the top on the major cities in China. Reputed as the worldâs historical city and one of the top seven ancient capitals in China, Beijing has been the capital of China since Lioa Dynasty, 800 years till now.
1 China's population is equivalent to 19.24% of the total world population. 2  China ranks number 1 in the list of countries by population. 3  The population density in China is 145 people per Km2. The population density in China is 145 people per Km2. 2  54% of the population is urban (756,300,115 people in 2014). 3  The median age in China is 35.7 years.