| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | clean room | Japanese culture | Involves taking off shoes before entering to maintain cleanliness and respect for the space. | 1 |
| 2 | clean room | Japanese culture | In Japanese culture, a clean room also includes the removal of outdoor footwear before entering, and maintaining an organized layout of items in the room. | 1 |