Although he was not an Alchemist, he was aware of some rare and special medicinal materials...
For example, the Purple Smoke Grass that Mo Jiuli just harvested was an extremely rare medicinal material! Purple Smoke Grass, rather than being called a medicinal material, should be called Divine Grass. It is said that when Purple Smoke Grass reaches a certain age, it can directly transform into a Purple Sword, and once it transforms, it is incredibly sharp, inherently poisonous, and the poison of the Purple Sword is incurable in this world...
In addition, before the Purple Smoke Grass transforms into a Purple Sword, it can be used as medicine in pill refining to allow a Cultivator at the Divine Master Peak to directly advance to God emperor! That's the God emperor, which has never appeared in the Divine World so far; there are only four Divine Masters! This shows the preciousness of Purple Smoke Grass...
