As soon as Tian Rujing gave his consent, Chu Yu explained what she understood: the light shield was actually a force field triggered under certain conditions to defend against external attacks. The center of the force field was the body's center, and its most effective area, where the repulsive force was strongest, was two meters from the center.
The conditions for activation were quite complex, but to put it simply, if an external object approached Tian Rujing at a speed exceeding a certain limit, the defensive force field would automatically activate. For instance, when Chu Yu twice made a move towards Tian Rujing and when Tian Rujing was attacked by an assassin, their speeds exceeded that limit, causing the force field to activate automatically.
