Bai Xiao slept for a full day and night before she woke up. Even with her special ability, she couldn't withstand prolonged exhaustion. Physical fatigue isn't much related to healing, and besides, it wasn't as if she could just use her powers on herself for not sleeping. It would be overkill, like using a cleaver to kill a chicken—a waste of her abilities.
This isn't chewing gum that you chew whenever you feel like it.
She was not one to waste resources.
When she woke up, it was already the next morning. As soon as she opened her eyes, she saw An Zhiyuan sitting by her side, his eyes full of worry and anxiety.
"You're finally awake?" An Zhiyuan hugged Bai Xiao tightly.
Tightly and forcefully, his arms were brimming with care.