Under the new regulations - If I dissemble my bike can I take it on a rail in China?

I heard that the new regulations ban bikes on trains unless they are disassembled and put in a bag. Is this true? I want to travel throughout Qinghai and Gansu province China with my bike in June - will I be able to without paying an extra fee? My bike is very light - less than 10kg and can be easily dissembled and placed in a bag which meets the requirements for on-board travel on China rail.

Thank you!