Originally Posted by allset2travel

I recall I had done a very late (past 23:30) crossing once several months ago, via Huanggang. This trip was by bus. My DW and I were the only passengers on board. I found it very convenient. Once crossed the border, called a cab by the convenient store.

Shuttles to Huanggang and Shenzhen Bay Port
Service Provider : Chinalink Travel
China Travel Tours Transportation
Eternal East Bus
Sinoway (China) Express
Trans-Island Limousine
Destination : Huanggang (Service hours: 0700 – 0100) &
Shenzhen Bay Port (Service hours: 0700 – 2230)
Boarding Point : Coach Station, Terminal 2
Ticketing Point : Counter C01, Coach Station, Terminal 2
Telephone : +852 2183 7348

The BOLDED one is what you want.
For further info, please check here
http://www.hongkongairport.com/eng/t...-services.html