"Add a filter condition, it must be painless, having no negative impact on evil entities," Yu thought of little Veil, who was still intent on repairing the orphanage. If the process of extracting Energy Points became very painful, then it would defy Yu's original purpose of containing Veil.
That wouldn't be containing; that would be bringing in an enemy to torture. If that was the case, it might be better to let Veil's spirit dissipate, which would at least spare her some suffering.
[Patent invention that meets the requirements: Evil Force Massage Device]
[Evil Force Massage Device: Massages the Spiritual Body and physical body through hyper-frequency dimensional oscillation, allowing the target to shed and extract the origin forces while enjoying the massage]
