How can i go to Guangzhou from Luohu ?Should i take bus or train?How much is it?

Both bus and train are good choices:
by bus: walk from Luohu to the nearby Luohu Bus Station to take a bus to Guangzhou. It takes 2-2.5h and the bus fare is CNY60-70 per person.
by train: at Luohu Railway Station, buy a ticket and get on the bullet train to Guangzhou. You will be taken to Guangzhou Station or the East Station. It takes 70-80min and the fare is CNY79.5 for a second class seat and CNY99.5 for a first class seat.