其實如果太熱要開，可以調節到適合溫度，亦可配合風扇使用，不需要過涼，亦可節能。
熄冷氣後可以開窗/開風扇吹乾，使空氣流通！
In the case we have the need to use air-con, we can adjust to approximate temperature, not to be too cold. Can do use together with electric fan, this shall be more efficient for cooling down and save more energy.
After we switched off the air-con, we may open the windows and/or turn the electric fan on for better ventilation and moisture removing!
