For a sixth-tier Qi Refining cultivator, creating a low-grade Thick Earth Amulet does not consume too much mental energy or spirit power.
However, if it's a middle-grade Thick Earth Amulet, being able to create one a day would be quite impressive.
A middle-grade Thick Earth Amulet can withstand several attacks from a Qi-refining mid stage cultivator, and the spirit power contained within it is naturally quite terrifying.
Given He Song's level of cultivation at the sixth-tier Qi Refining, his spirit power would be largely drained the moment he finishes an amulet.
As such, he would need to recover his spirit power before continuing to create more.
However, what He Song is drawing now is not a middle-grade Thick Earth Amulet, but a low-grade one.
So naturally, it does not require much spirit power.
He continued to draw.
He Song's gaze was focused, his pen moved like a dragon or a snake, and the patterns of the amulet seal appeared one by one on the amulet paper.