表面坚强无比内心脆弱无比
[biăo miàn jiān qiáng wú bĭ nèi xīn cuì ruò wú bĭ]
Describing someone as outwardly very strong yet inwardly fragile, it speaks about individuals putting up a tough front or image but actually suffering greatly inside. This kind of person often hides their weaknesses or sorrows from other people.