After escaping from Li Moyun's office, Bai Rouyun returned to their room, where she entered the Primal Chaos Dimension again.
Here she played a bit with Xiao Bao and Xiao Jin, observed the herb garden, and read through some formulas and recipes. She was looking for a herbal bath that could improve her cultivation, without any downsides.
The reason she picked a herbal bath instead of a pill was because they were much gentler than the pills. When one consumed a pill, the pill would instantly erupt with energy within one's body. If the cultivator was not fast enough at consuming the energy, it would dissipate, or explode the body.
By using a herbal bath, the body would consume the energy at a slower pace, and nothing would be wasted. One could sit in the bath from the beginning until there was no medicinal efficiency left.