Ultimately, Lu Ye never figured out the answer to this question, because Second Senior Sister didn't explain it to him.
Maybe she didn't want to, or perhaps she thought it wasn't the right time. Since she didn't speak, Lu Ye naturally wouldn't pry.
Soaking in that tub full of medicinal syrup as usual, Lu Ye's wounds quickly improved thanks to Second Senior Sister's meticulous treatment.
By evening, Lu Ye stepped out feeling refreshed, at which point Amber ran over to rub against him.
During his days in the Righteous Blood Sect, Amber evidently became much more robust, having nothing but good food and sleep, along with a plethora of Spirit-Nurturing Pills to swallow, and occasionally coming over to Lu Ye to consume a bloodline from a Scale Armor, carefree indeed.
As for Yiyi...