天朝房地产占GDP超过20%，再加其上游下游连带产业的总产值占GDP就超过40%

这个40%不单是房地产吧

In China, Gross Domestic Product is divided by three sectors: Primary, Secondary and Tertiary. The Primary Industry includes Farming, Forestry, Animal Husbandry, and Fishery and accounts for around 9 percent of GDP. The Secondary sector, which includes Industry (40 percent of GDP) and Construction (9 percent of GDP) is the most important.

The Tertiary sector accounts for the remaining 44 percent of total output and consist of Wholesale and Retail Trades; Transport, Storage, and Post; Financial Intermediation; Real Estate; Hotel and Catering Services and Others. This page provides - China GDP Annual Growth Rate - actual values, historical data, forecast, chart, statistics, economic calendar and news. Content for - China GDP Annual Growth Rate - was last refreshed on Sunday, December 21, 2014.