When the ghost witch died, her body transformed into a crimson gas, which was about to fall to the ground but was abruptly absorbed by Han Yi's nascent soul.
Sixth Soul Skill.
Devour Soul.
Han Yi had carefully observed his surroundings a moment ago, and he noticed that when the cultivators killed ghost witches, the witches would either merge into the ground and disappear or turn into crimson gas, scattering and merging with the earth.
This process was difficult to stop, and even using tools to collect the gas would eventually result in its dissipation due to the laws of this dimension.
Han Yi realized this during the brief moment of lightning and flint stone.
No wonder the ghost witch could instantly recognize that Han Yi did not belong here, as he did not have the imprint of this place and was not within the Law, making it obvious to the ghost witch that he did not belong.
This was also why Han Yi had tried to use the Devour Soul skill without hesitation.