character: Chinese Laborers
topic: Contributions of Laborers to the Great Wall Construction
grade: 6
subject: Social Studies
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character: Chinese Workers
topic: Techniques Used in the Great Wall's Construction
grade: 6
subject: Social Studies
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character: Ancient Builders
topic: Materials and Methods in Great Wall Construction
grade: 6
subject: Social Studies
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character: Han Dynasty Engineers
topic: Engineering Innovations for the Great Wall
grade: 6
subject: Social Studies
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