The little light sphere is a system entity that accompanies Xue Dongyu after she transmigrated to the Song Dynasty. It tracks her Fate Points and Achievement Points, and it was responsible for accidentally bringing Emperor Renzong from another timeline during the exchange process. The system is described as unreliable and sometimes anxious, with its blue light flickering when worried. It discovers that Zhao Zhen needs Achievement Points to stabilize his soul and suggests that Xue Dongyu use this knowledge as leverage. It admitted to absorbing two of Xue Dongyu's Achievement Points, thinking it was leaking energy, and later lets out a triumphant laugh when proposing their scheme.
