"If you used them with another energy which wasn't compatible with them, they would either won't work, or their performance would greatly plummet. There are also Universal Treasures that could be used by any type of energy, but they are too hard to make, not to mention precious.
"And your mask isn't seemed to be a Universal Treasure. So, the moment you change your cultivation system to Qi, the magic item loses its compatible energy medium, which is Mana, not Qi.
"That's why you started to feel uncomfortable because this mask stopped working at its full efficiency like before. This also made it exposed to my probing of mortal level despite being a magic item above the mortal grade." Cyrus patiently explained.
Hilda was no longer calm as she quickly asked, "Then why can't I take it off? Since it lost its compatibility, why can't it be removed? Furthermore, I never felt this mask taking any mana from me before while you're saying it was in sync with my mana?"
