I'm in Hong Kong stayin at Discovery Bay in HK and I want to travel to Guangzhou where do I take the Train

If you want to take the trains from HK to Guangzhou, you need to reach Hung Hom Station to take the trains.

From Disneyland, you can first take the bus line R8 to reach Lantau Link Toll Plaza Station where you can find the bus line A21 to reach Hung Hom Station directly.

Hope you can find it.