Presumably, it's still because of the influence of Medicine Master Valley, meaning she's not just an individual; she has Medicine Master Valley behind her, so the responsibility on her shoulders made her decisively choose to do so.
Yuchi: "How long has this symptom lasted?"
"How long has it lasted?" Sun Miaoxing calculated for a moment and said unsurely, "She started when I was small, I suppose. Based on my experience, she's probably been like this for over three thousand years now."
Yuchi spat out a mouthful of old blood, three meters away.
"How long?!" Yuchi's inner voice erupted once again in shock.
"I'm over three thousand years old now, so she has to be at least over three thousand years too. After all, she was already the Valley Master back then, and I've really grown up under her watch. Now I'm graying at the temples, yet she's still appearing as a thirteen or fourteen-year-old girl."
