From Yuanling's perspective, once he learned that Maitreya Buddha intended to obtain the Divine Water from Guanyin's Jade Clean Bottle to restore his severed arm, Jiang Liu's heart began to silently ponder.
Speaking of the world of Journey to the West, although the level of cultivation is certainly important, there are many magical skills, or should say, items that exist which have restraining effects.
For instance, the Official of the Sun is not particularly outstanding among the twenty-eight Star Abodes, but he can easily kill a Scorpion Demon of the Great Luo Golden Immortal Level.
Similarly, Guanyin's Cultivation Level is only at the Great Luo Golden Immortal Level, and even Maitreya Buddha himself, whose arm was cut off by the Witch-Slaying Sword, could not recover on his own. However, the Divine Water in Guanyin's Jade Clean Bottle being able to help him recover was not an impossible matter.
