I think you could refer to my reply to Ms.Ting(Malaysia) below on this page~

fromliuhua take a walk to bus station near to train station, then take a bus to dongguan then take a cab. bus charges 38RMB each of you. in dongguan need to take to taxi .about ten RMB each taxi.
if take a train drop at Dongguan ,infact it is part of dongguan so take a bus to dongguan city from tran station then change cab.trable by train.