PREVIEW
... six areas: A, B, C, D, E, and F.
The areas E and F are twice as large as the other four areas, which determines the internal structure of the checkpoint: A, B, C, and D are arranged in a row at the front, with E behind AB and F behind CD, forming a "four in the front, two in the back" structure.
The station master’s office is located on the sixth floor of the office building in area E, the highest point of the entire checkpoint, offering a panoramic view through the floor-to-cei ...
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