In the mortal world, there exist "Spiritual Medicines" over a hundred years old, but they are extremely rare, often found in the deep, seldom-visited mountains and forests, making them very difficult to obtain.
The "Doctor Pavilion Sect" where Lin Ruoxue belonged also had a small reserve of Spiritual Medicines that were over a century old. However, Lin Ruoxue had never heard of nor seen a Spiritual Medicine like "Frostflower Grass" before in her life.
Suddenly, Lin Ruoxue thought of the words "Hidden Sect."
"Hidden Sects" are those ancient martial sects that are isolated from the world and have a heritage spanning over a thousand years. They are also the mystical, holy places all martial artists yearn for.