Xu Hei's current usable magical treasures—Fire Thunder Seal, Wind-Stabilizing Pearl, and an iron pot—are all mid-grade spiritual treasures, possibly even less powerful than a flying sword.

Xu Hei took a deep breath, swallowed a Divine Explosion Pill, closed his eyes, and calmed his mind.

Mountain Embrace Seal, an advanced earth spell, requires constant visualization of a massive mountain day and night. Once the mountain's shadow can be manifested, True Qi is infused to solidify it.

The stronger the True Qi, the more powerful the mountain.