你美得就像你大姨妈
[nĭ mĕi dé jiù xiàng nĭ dà yí mā]
Warning: This phrase comparing beauty to 'getting your period' may not translate well outside its cultural context and risks being inappropriate or offensive. Menstruation should not be trivialized in comparisons of appearance or beauty, so it’s advised not to use such phrases in any context.