if u r in the nanjing airport in the day time ,it has airport bus which will go 2 yangzhou,u should take that bus,coz it stopped in yizheng.time that that bus start:12：00pm、2：30pm、5：30 pm.
if u cant get that bus,u hav 2 take the airport bus 2 hanzhongmen of nanjing,arrive at nanjing long distance bus line terminal,and then take the bus frm ther 2 yizheng.