台Taivo A Taiwan Mandarin dictionary

無病呻吟

wúbìngshēnyín

ㄨˊ ㄅㄧㄥˋ ㄕㄣㄧㄣˊ

Simplified 无病呻吟

1(idiom) to moan and groan despite not being sick; to feign illness; to complain without cause; (of writing) to indulge in confected sentimentality

Keep 無病呻吟 and it comes back until you know it.