How do I go to Hong Kong from Wuhan and what i prefer is low price transport.Please help me..

Well, you are suggested to take an ordinary train to Guangzhou first to save money. The normal train takes 12-13 hours and CNY255.5 for a hard sleeper, 443.5 for a soft one. After getting there, you can take a train to HK, which takes about 2 hours and CNY179 for a first class seat.

You may also consider flying to Shenzhen or Guangzhou for a transfer. Sometimes the domestic flights have amazing discounts. Then take a train to HK.

Thank you.....I think its perfect and will surely help me......

And also one doubt....
I heard about bullet trains which are available to travel to HK from somewhere China..
Is that true???

No, no bullet train is available, since as I know, there is no bullet train station in HK now. But I heard there will be one in 2018.