CSTNET(China Science and Technology Network) is an academic, non-profit research network under the leadership of the Chinese Academy of Sciences, it’s managed and operated by Computer Network Information Center(CNIC) in CAS. CSTNET is the birthplace of the Internet in China, connecting the major scientific research institutions, national research infrastructures, scientific data centers, supercomputing centers and other important scientific research resources in china. It coverage more than 30 provinces, municipalities and autonomous regions nationwide, and there are total of 13 regional sub-centers all around China.