They didn't know.
Over a thousand years ago, Shen Zhou imparted the art of needle techniques through three mental methods.
They were separately passed on to the talented medical students of the time.
The three mental methods were called the Heavenly Earth Needle Method, the Qiankun Needle Method, and the Sun and Moon Acupuncture Method.
From these, three great schools of thought that had lasted for a millennium were derived!
Although they were only the most basic needle techniques, they were also infinitely profound.
The three schools of thought had saved countless lives over the years, being passed down to the present day.
Therefore.
When Shen Zhou said, "The three halls hold me in the highest regard," it wasn't an exaggeration!!
