shuǐ xiāng yào qīng xǐ, fáng jiān yě yào tōng fēng, bù rán jiā lǐ huì yǒu mēn wèi

水箱要清洗，房间也要通风，不然家里会有闷味。

The water tank needs to be cleaned, and the room also needs to be ventilated, otherwise the house will have a stuffy smell.