During her time in the alchemy furnace, Alice could clearly feel her strength skyrocketing.
However, after reaching the Elemental Deity level, the pace of her strength increase slowed down significantly.
The secret technique passed down by William had no bottleneck, but the requirements for enhancing one's power were much higher than those of ordinary secret techniques.
For a typical Elemental Deity at the early stage to break through to the mid-stage, around ten million energy crystals would be needed.
At the same level of power, Alice would need twice as many, or even more.
If not for the thousands of Nature Deity elites bombarding her day and night with spells and magical artifacts, and if not for the alchemy furnace's extraordinary effects, Alice would have no idea how many years it would take to break through from the mid-stage of Mortal Deity level to the peak of Elemental Deity level.