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minli_xu: Philadelphia City Hall
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minli_xu: Philadelphia City Hall
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minli_xu: Philadelphia Downtown
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minli_xu: Upenn -- The Quad Dormitories
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minli_xu: Drexel University
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minli_xu: Upenn
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minli_xu: Upenn -- Ware College House
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minli_xu: Upenn -- Penn Alumni Hall
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minli_xu: Philadelphia Museum of Art
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minli_xu: Philadelphia
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minli_xu: Philadelphia Museum of Art
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minli_xu: DSC_0012