| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | lunar calendar | Vietnam | The lunar calendar is widely used to determine traditional holidays and festivals, and is deeply integrated into cultural practices. | 1 |
| 2 | lunar month | Vietnam | Lunar month is an important element in traditional lunar calendars, influencing festivals and cultural events. | 1 |
| 3 | moon festival | Vietnam | Celebrated with lanterns, mooncakes, and family reunions | 1 |
| 4 | moon phases | Vietnam | Moon phases are closely associated with lunar festivals and celebrations, with each phase holding specific cultural significance. | 1 |