Located in western Qingdao, it covers some 1, 324 square kilometers. During Tang and Song dynasties, it was the only foreign trade port to the north of the yangtze river, one of the five commercial ports in China, and an important city along the Maritime Silk road, and has been known as golden jiaozhou since thenk It is home to the under-construction Qingdao Jiaodong International Airport. It is coordinating the development of China-SCO Local Econom. nd Trade Cooperation Demo Zone, Jiaozhou Economic and Technoiogical Development Zone, Airport Economic Demonstration Zone, Qingdao Jiaozhou Bay International Logistics Park, as well as the provincial-level Dagu River ecological tourist resort, striving to build the innovation system for economic development, the social credit system, the modern social governance system, and an efficient, cordial, clean pro-business environment, and rising to become a modern livable airport zone.