Definition
**Formation Techniques (阵法) in Xianxia**: The Yin-Yang Dual Qi Formation is a classic example of a pre-set trap formation. In xianxia, formations are not just barriers; they are instruments of law manipulation. The concept of ‘leading’ (引领) is key here—a small number of energy cores (like a formation flag or a guiding talisman) control the entire array, reducing the soul burden on the user. When activated, a formation instantly reshapes the sensory reality of the area—light turns to chaos, mists rise, and the environment becomes an extension of the caster’s will.