Hi , I plan to travel to the Yuyuan Gardens from the Waigaoqiao Free Trade Zone subway stop

Hi am travelling from the Waigaoqiao Free trade zone subway stop and have to use many different lines to get to the Yuyuan Garden stop. Do need to buy different tickets each time I change lines? Is there just 1 ticket that I can buy to travel from Waigaoqiao Free Trade subway to Yuyuan Subwat stop?
Thank you,
Vicki