No airport bus from Pudong airport will stop at People's Square. You should take Airport Bus Line 2 to Jingan Temple and then it is 5 minutes by subway (two stops) to go to People square (suggest you take a taxi then to your destination directly). Bus is cheaper than maglev. Maglev train: 50RMB (40RMB if showing your air ticket of that day) plus 4RMB subway to the people's square. By bus: 22RMB plus 3RMB by subway (or 11RMB by taxi).