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 And Beijing ranks as the second largest city of China with a population of 19,959,563 (data based on the result on January 1st 2011).2  China's third largest city is Guangzhou with a population of 13,510,651 (data based on the result on January 1st 2011).ccording to the urban population data of each city, Shanghai ranks as the largest city of China. The 2010 census put Shanghai's total population at 23,019,148, a growth of 37.53% from 16,737,734 in 2000.