Introduction China is rapidly developing in economy. The building industry has been identified as a vital engine of economic growth. The risingneed of housing for the growing rural and urban population is apressing issue. Statistically, at present more than 2 billion squaremeters new houses are built in China every year. To maintain rapidrate of economic growth in the 21st century it is important to putstrategy for housing to meet the needs of the rural and urban pop-ulation.