There were so many precious plants in this ancient herb garden.
Golden ginseng over 70,000 years old, Vitality Revitalizing Grass over 50,000 years old, Blood Cleansing Mushroom over 80,000 years, and many more...
Each of those precious plants was priceless material for pill making and needed to be harvested carefully, or they might be ruined.
It might need more than two weeks for the Oracle Mountain Sect's core disciples to carefully harvest so many precious plants.
Who knew how many other cultivators would find this herb garden other than them in those two weeks!
So, the Oracle Mountain Sect's core disciples planned to hide this herb garden with concealment formation, so they could harvest all of the precious plants here in peace.