Hongkong Airport to Guangzhou by train

Upon arrival, take bus no.A21 at Airport (Ground Transportation Centre), get to Hung Hom. It takes around 75 mins with the fare of 33 HKD per person.
Then walk southwest to Hung Hom Railway Station. There are several direct trains that can take you to Guangzhou. The train schedules are from 07:25 to 20:01. The duration is about 2 hours. The first class seat costs CNY183 and VIP seat costs CNY218.