The Nine Clouds Yuan Recovery Pill was a ninth-grade pill left behind by the Tianling Dynasty's ancestor back then, and it was very precious. Rumors had it that this pill could elevate one's Yuan meridian standard, so the Tianling royal family had been taking extreme care of it.
A ninth-grade heavenly doctor hadn't appeared in the Tianling Dynasty for hundreds of years, so one could just think to know how rare this ninth-grade pill was.
Back when the Princess became of marriageable age, His Majesty had bestowed this Nine Clouds Yuan Recovery Pill upon her as a gift. Everyone knew that His Majesty was bent on passing the throne to the Princess. From then on, the Princess was in charge of taking care of the Nine Clouds Yuan Recovery Pill.