This "Shennong's Materia Medica" is not the one from Earth, but it shares the same name.
In a world of Martial Arts, where one can introspectively observe the minutest details, medical development would far exceed the level of the normal ancient times; misconceptions would be relatively few, and there would be no need for groundless tonics based on shape or bizarre medicinal guides.
The Earth version records three hundred and sixty-five medicinal substances, and due to its ancient origins, it does contain some errors, whereas here, it's feared that not even three thousand types would be the limit.
To memorize and study this thoroughly would truly not be a feat that could be accomplished in a short period without resorting to a "Heavenly Book" cheat; one could not expect to learn it properly otherwise.
Master didn't just throw it at him to learn on his own; he still maintained the proper "Master" attitude.
