After experiencing three battles in the Corpse Bone Forest, Yan Qing had fully understood the difficulty of acquiring Celestial Calamity Karmic Force.
Not to mention how challenging it was to fight beyond one's level, simply finding the 'correct method' to release the Eternal Sinner was enough to make Yan Qing's head spin. Like the Three Mountain Secret Realm, Yan Qing had attempted it nearly a hundred times, testing various tokens in the process, but had never activated the Karmic Force bar.
In the end, the Karmic Force bar mechanism was too ambiguous. Take the Corpse Bone Forest as an example, does it require a Buddhist Sect token, or a token related to Buddhist tales, or perhaps a token from killing members of the Buddhist Sect? Nobody knew, but somehow the Seven-Step Chant fit by coincidence.
