Pudong, the Dong means East of the Huangpu river, where Oriental Tower etc, are located. PuXi, the Xi means West, where the Bund is located.

Hi Deepak, the sight seeing tunnel merely connects the Bund side to the Pudong side, acting as a tourist attraction only. I recommend you download this app, Metro Shanghai Subway by Wu QiuPing. In fact, it has all of China's main city's Subway maps, which you can download at the Settings. Familiarise yourself with the different subway lines, search for People's Square. You can get there via Line 2 (light green), Line 8 (blue) and Line 1 (red). Beneath the Square, there are plenty of shops, restaurants etc., depending on which exit you took when you alight from the train. Hope this helps, enjoy your holidays.

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