Shanghai still attracted many overseas tourists with its unique charming, though without so many historical relics as in Beijing. It is expected that shanghai will host 11 million people each year by 2010 when 2010 Expo is held. However, one issue is not solved yet. David is enjoying the beautiful sight of the Bund and feeling eager to relieve oneself but looking for a public washroom is not as easy as one imagines. He is really in an awkward situation…