Once an event is finished, all big international event organizers have a headache trying to figure out what to do with old facilities and venues, such as stadiums, pavilions and the like. High maintenance costs usually pose severe financial burdens for host cities. Will the 5.28-square-kin Shanghai Expo site face a similar problem? Expo Weekly talked to Wu Zhiqiang, Chief Planner of the Shanghai World Expo and Dean of the College of Architecture and Planning at Shanghai"s Tongji University.

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