Lu Ya plotted against Wukong, and after intercepting him, a great battle ensued, but it was difficult to prevail in such a short time. Eventually, he made a firm decision to blow up the Immortal-Slaying, God-Punishing treasure blade in his hand and sacrificed it to summon a jade figure, a thousand zhang tall and wielding a cold light that struck with tremendous force.
At this level of battle, magical treasures were the primary factor, followed by divine skills, representing a clash of actual strengths. There was absolutely no room for trickery; only head-on confrontation could resolve the fight.
Even when Wukong was in the Dream Dao and battled Amitabha Buddha, it took an entire month, which goes to show the might of the Sages.