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People are waiting in a long line.

Participants to the left waited in a long line to get onto the stairway. On the right, those who finished climbing headed outside after an elevator ride back to the first floor. (Yunyi(Jessie) Liu/MEDILL)

Participants to the left waited in a long line to get into the stairway. On the other, those who finished climbing heading outside after an elevator ride back to the first floor. (Yunyi(Jessie) Liu/MEDILL)