大姨妈的红黑了我的世界

'Aunt Flow's red has colored my world with red and black.' In Chinese slang, 'Big Aunt' usually refers euphemistically to menstruation; the term 'red and black' could denote dramatic emotional swings or the starkness that this biological event brings about. It can mean feeling overwhelmed due to the changes during this period, possibly emphasizing negative emotions such as melancholy, despair or depression caused by physical discomfort, which dramatically colors one's perspective on their surroundings and daily life.