不高不帅但还是耐你不萌不美但还是宠你
[bù gāo bù shuài dàn hái shì nài nĭ bù méng bù mĕi dàn hái shì chŏng nĭ]
The literal meaning is 'Not tall, not handsome but still endure; Not adorable, not beautiful but still cherish,' which humorously acknowledges one's flaws yet expresses undying affection.