Going to Shanghai

A few weeks ago Diana and I headed down to Shanghai. We flew down instead of taking the train and we took the "back way" to the Beijing airport. Normal Taxi fare to the airport from city center is around 75RMB, an express bus from Dongzimen is around 30RMB but if you take the public bus it is 4 mao or 4/10 of a RMB (currently the equivalent of 5 US cents). The cheapest route to the airport!