| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | knock | Japanese culture | Considered impolite to knock on a sliding door in traditional Japanese architecture; instead, announce your presence verbally. | 1 |
| 2 | knock | Traditional Japanese culture | In traditional Japanese tea ceremonies, it is customary to knock on the door in a particular way to announce your arrival. | 1 |