Advanced Spiritual Sense Elixirs are extremely difficult to refine.
Firstly, there are not many pill formulas for this type, and it is very difficult to modify some ancient pill formulas into ones that can be directly refined now.
Secondly, the refinement process requires a high level of skill.
Don't be fooled by the many alchemists at the Middle Stage of Golden Core present. Very few can actually refine an Advanced Middle Grade Spiritual Sense Elixir.
Next in popularity are the complete demon beast materials from Chu Ning.
The materials from the few demon beasts Chu Ning killed are exceedingly complete, with all sorts of treasures including the demon core intact.
As for the cultivators present, they are indeed a rare find.
Relatively, the spirit medicines and talismans Chu Ning offered were not as popular.
However, even so, the things Chu Ning offered were nearly all exchanged.
