T-Flight - China’s supersonic train would reach 4000 km/h

China announced a plan to develop T-Flight, a supersonic train system that would reach 4000 km/h. Mao Kai, technical director of the T-Flight train system project with the China Aerospace Science and Industry Corp, said that: 

In the first phase, we'll realize the speed of 1,000 kilometers per hour for domestic intra-city commuting; the next phase will see speed of up to 2,000 kilometers per hour for domestic intra-region traveling to link up economic zones of Beijing, Shanghai, Chengdu, Guangzhou and Wuhan. 

The third phase will realize the speed of 4,000 kilometers per hour. In the future, a flight train network covering countries along the Belt and Road region will be formed to support the Belt and Road Initiative”