There are four stations in Guangzhou, namely Guangzhou Station (Liuhua in the urban area), guangzhou east railway station (Tianhe in the urban area), Guangzhou North Station (Huadu District) and Guangzhou South Station (Panyu District). You should be talking about Guangzhou Railway Station. Guangzhou Railway Station has Metro Line 2 which goes directly to Guangzhou South Railway Station, and there is no need to transfer. Guangzhou East Railway Station takes the No.1 subway to the park and then transfers to the No.2 subway to Guangzhou South Railway Station.