C55 Curettage and healing
The most difficult thing to do in order to heal one's injuries wasn't how to shave one's bones, but how to let a patient endure the pain of having to shave his bones. Not everyone could be like Guan Yu who was able to remain calm despite the pain.
Why did everyone think of Guan Yu when it came to shaving and healing, it was because the pain was something they had to endure.
Since ancient times