From your article

High speed, which are also called bullet or CRH, here refer to G, D and C types in China.
Painted in white or grey with a ‘bullet’ locomotive, they can be easily recognized. Their top speed is 186 mil/h (300 km/h) and is planned to be increased to 217 mi/h (350 km/h) in 2016.
When will the speed get increased?
Thanks for the answer!