This man was a nephew of the butler at the Su mansion. With his uncle to protect him, the man had been a tyrant on this street until he accidentally pissed off the third prince and was almost killed.
The Su family butler begged his master to invite an imperial physician to see his nephew, but the doctor said that there was nothing he could do.
They had only come to the Daoist nun as a last resort. Every other doctor said that there was no hope for the patient, but Gu Bailu's signboard claimed that she could cure all illnesses.
Gu Bailu wasn't an expert in internal injuries, so she used a pill of Dragon Spirit Blood.
After it was processed, the pill didn't smell of blood at all. Even a seasoned doctor wouldn't be able to tell what it was made from.
The butler's nephew was taken back after he ingested a pill. He was up and about by the next day, and brought gifts to thank Gu Bailu.