Literally meaning “effective vs. ineffective,” this way of listing and comparing things has been popular among Chinese netizens recently, especially in the context of the workplace and campus life. People use this structure to remind others of the importance of spending their time more wisely or doing things in a more efficient way.
Nǐ de lùnwén wánchéng le ma？Sìhū nǐ zuìjìn chángcháng áoyè。
Have your finished writing your thesis? It seems you’ve recently been staying up late.
Hái méiyǒu，shàngwǎng chá zīliào chángcháng kàn xiē wúguān de nèiróng làngfèi le shíjiān。
Not yet. I often wasted my time checking out irrelevant contents online.
Nǐ yào yǒuxiào áoyè，búyào wúxiào áoyè。
You need to spend your night more efficiently, don’t waste time.