大姨妈不算事
[dà yí mā bù suàn shì]
'Da yima' is slang used for menstruation. Saying 'it's not a big deal' might show independence or toughness, possibly trying to say women's menstrual issues should not be over dramatized. This nickname reflects cultural and physiological taboos around discussing menstruation directly and openly while expressing casual, positive or nonchalance attitudes toward traditionally feminine concerns.