柠檬酸是酸但不比你装
[níng méng suān shì suān dàn bù bĭ nĭ zhuāng]
Translating literally, 'Lemon is sour but no need to be fake.' It suggests that while acknowledging the tartness of lemon juice which can metaphorically indicate unpleasant things like hardships, sorrows, etc., people choose to feign or exaggerate reactions unnecessarily more than how much it really bothers them, thus highlighting authenticity over pretentiousness.