Literature Reference: 沛然莫之能御，界于天地之间。——《庄子·逍遥游》 Its force is so vast that nothing can stop it, and it exists between heaven and earth. Source from 'Zhuangzi: Free and Easy Wandering'.
沛: Describing abundance and prosperity.
界: Boundary. Limit.
Meaning: It signifies a vast and boundless realm, symbolizing immense power and grandeur.