The world's fastest internet network is currently operating in China as it connects Beijing, Wuhan and Guangzhou. This 3000 kilometer long system is capable of transmitting data at a maximum speed of 1.2 Tbps (1200 Gbps) which is faster than the previous record of 400 Gbps held by the United States.
This internet system reaching a speed of 1.2 Tbps comes much earlier than the original prediction that it will only arrive by 2025. It is fast enough to allow 150 high-resolution movies to be downloaded in just 1 second. Even so, the world record for the fastest data transmission is still held by the Technical University of Denmark (DTU) and Chalmers University of Technology with a speed of 1.84 petabit/s (Pbps) but this is a test network and not for general use.
To realize it, collaboration is done between Tsinghua University, China Mobile, Huawei Technologies and Cernet Corporation. It took a decade to develop under the Future Internet Technology Infrastructure (FITI) program. Through FITI China wants to reduce dependence on outside technology as well as create a backbone network that can support 5G cellular networks.