The first thing Cheng Lingyu did upon returning to the Second Prince's Mansion was to research how to consume the Mystical Profound Pill and what preparations were needed.
Fortunately, the Second Prince didn't care about her at all, and the servants in the mansion knew that this master wasn't favored. She didn't have many hobbies, preferring to read books, so no one paid her much mind.
Cheng Lingyu leafed through several ancient texts, all of which stated that the Mystical Profound Pill should be swallowed directly.
Moreover, it would take effect quickly, with results appearing overnight, whether it was a success or a failure.
However, the effect of this Mystical Profound Pill is very intense, and when it takes effect, it will be very painful, and it must not be disturbed. Therefore, it's best to find a quiet environment.
A quiet environment? That would be impossible at the Second Prince's Mansion.