Song Yonghui flushed at hearing this. His little cousin had grown up, but then he thought of something he'd been told as a child - his aunt had become infertile because she had once been out in winter's cold for too long and ended up with a gynaecological disease called cold uterus. The doctors then said it was unlikely she could bear children.
His mom used to constantly remind him and his elder brother to take good care of their sister during her menstrual period every month. They weren't allowed to eat cold food, touch cold water or be exposed to the cold, so after a few days of finding it troublesome, they formed a habit of looking after her at any time.
Back then, their little cousin was still young and with all the family turmoil, they didn't think about this.
