If i will take the train from HK to Shenzhen Luo Hu. where will i ride bullet train to Guangzhou?

After arriving at Luohu Port, walk north around 370 yards (340 meters) to find the Main Railway Station. There are several high-speed trains that can take you to Guangzhou East Railway Station. The train schedules are from 06:20 to 22:44. The duration is no more than 1.5 hours. First class seat costs CNY99.5 and second class seat costs CNY79.5.

Hi Mina. thanks for the info. would you recommend to just get tickets from the stations or do I need to buy tickets from travel agencies ahead of time? thanks again:)

For your convenience, it's advised to book the train tickets in advance. As I know, TravelChinaGuide provides such online booking service. You can trust them. If interested, their contact information is bookingtravelchinaguide.com.