kāichuāng tōngfēng bù zhǐ kàn xīnqíng yě yào kàn kōngqì zhìliàng shīdù huāfěn hé shāchén

开窗通风不只看心情，也要看空气质量、湿度、花粉和沙尘。

Opening windows for ventilation depends not only on your mood, but also on air quality, humidity, pollen, and dust.