An area of 931 square kilometers can be used for city development, 46% of total area. The rest is preserved for agriculture, water resources, forestland, and grassland. There are over 90 kinds of wild animals with economic value under protection at state level. Shenzhen River runs 35km long. Shenzhen has a coastline of 230km and is abundant in mineral and aquatic resources. At the same time with the rapid economic development, Shenzhen tries to gain full improvement of all social sectors. Recently, it is a warded as the National Sanitation City, the National Garden City, the National Model City in Terms of Environment Protection, and Top Tourist City of China. A group of blocks of flats are appraised as the Model Blocks of National Property Management. The city owns modem cultural facilities, such as Book City, theaters and libraries. Orchestras and dancing troupes are also available here.