Xiang Yanan was first startled, then a blush crept onto her cheeks as she said, "How… how did you know?"
Wu Xiaoshan smiled and continued, "I just observed you for a bit, and not only did I notice that it's been a long time since Sister Nan's last period, but I also know that your constitution seems worse than the average person's, right?"
Hearing this, the shock in Xiang Yanan's eyes intensified. She nodded and bitterly responded, "That's right, my constitution has always been poor, especially when the seasons change, I'm bound to catch a cold."
"Sister Nan, the real reason your constitution is poor is that your digestion is bad. Even though you're the chairwoman of the gourmet festival's judging panel, and even though you eat well, if your stomach and intestines don't absorb it, then you can't keep up with the nutrients. Over time you become malnourished, and your constitution worsens."