about which railway station to get on with the train t110 in shanghai and t109 in beijing

i was wondering if i was right to take T110 at railway station west in shanghai. From Beijing to shanghai is at railway station south on T109. if i was wrong ,please tell me which station i should aboard. thank you for your help.
please tell me whether i was right to book the T110 ticket from Shanghai to Beijing and T109 from Beijing to Shanghai .
thank you for your help and realy appreciated.