On Dec 29, 2007, The Shanghai Urban Planning website published in a low-key manner its plan to extend the Mag-lev (Magnetic Levitation) train leading from the airport to Shanghai South Station further into the city center to Hongqiao Transport Hub. The length of the line is 31.8 miles with 1.6 million people living within 200 metres of the new proposed line. After that, the plan was widely reprinted by net citizens, especially among online forums of nearby inhabitants. In order to illustrate their opposition and attract more attention, they began ‘mild walking’ on public places such as People`s Square. The main causes for their opposition can be attributed to three elements: firstly, the planning did not inform them in advance and they argued that this was improper administration; secondly, there are still many debates on the impacts of Mag-lev technology. For example, a famous China academician of the Academy of Engineering told a journalist from International Finance News that the train does not meet the four indices of transport value: safe, reliable, suitable and economical: and is just a kind of ‘traffic toy’ used to show-off. Third, the construction standards are dangerous. For instance, in Germany, the country that invented the Mag-lev train, the standard required buffer distances for nearby residences are 500 metres; in Pudong District, the standard was reduced to 100 metres (Class A protection zone) and 50 metres (Class B protection zone). When applied to the Shanghai-Hangzhou Mag-lev Plan, the shortest lengths were only 30 metres, which could have a strong potential negative impact on human health. Based on these reasons, inhabitants began to take actions to protect their rights.