Long Yichen had never considered whether Duge would use the Soul Suppressing Vase against him after obtaining it.
Carefree Man had no knowledge of the levels of Divine Skills among Cultivators, so how could he possibly command a Cultivator's Magical Treasures?
Besides,
the function of the Soul Suppressing Vase was to defy the heavens and change fate, not a weapon-like Magical Treasure.
...
The closer Duge got to the Soul Suppressing Vase, the more he could sense the chilling and icy aura it emitted.
Outside the room, the aura only made him feel a drop in temperature.
But as he got closer to the Soul Suppressing Vase, the cold and chilling aura seemed to seep into his skin and bore into his viscera.
The closer he got, the stronger this sensation became.
Not only that, but this cold and chilling aura seemed to carry with it emotions of despair, resentment, pain, anger, and other heart disturbing emotions.