| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | air purifier | China | Increasingly used to combat air pollution and improve indoor air quality | 1 |
| 2 | ventilation | China | Belief in the importance of natural ventilation for maintaining balance of elements and promoting good health | 1 |
| 3 | ventilation shaft | China | Ventilation shafts are often designed to accommodate feng shui principles, ensuring the flow of positive energy and air circulation within a building. | 1 |
| 4 | ventilator | China | Less commonly used in hospitals, and spiritual or religious beliefs may impact its acceptance in medical treatment | 1 |