The last weakness, and the most crucial one, was that when the user unleashed the Intersecting Chaos, due to the high concentration of spiritual power, it was impossible to launch any other attacks or move the body while using the ability.
Therefore, from a magical standpoint, this was merely a supportive spell and couldn't truly be used for combat.
Although there were three weaknesses, the advantages were more apparent; once the opponent fell into the magical illusion of the Crossing Illusion, their combat power would be significantly weakened. In fact, their abilities still existed, but their control would be strongly affected by the illusions, proving deadly in combat among experts.
When Nian Bing learned the Crossing Illusion, he understood that it was more appropriate to consider this not as a spell but as a Domain, a special supportive Domain induced through spells and spiritual power.