The Spirit Beasts of Wood-Forest Island in Sen Kingdom were almost all somewhat higher in grade than ordinary Spirit Beasts.
Boli was one such example.
This was precisely the special effect of the Emperor Willow.
Its sap, in particular, had an extraordinary effect on the advancement of Spirit Beasts.
When it had still been at the third tier, Wang Ba had refrained from extracting its sap for fear of affecting its growth. Now that it had reached the fourth tier, he could take a small amount.
At this thought, he did not rush to deal with the Spirit Beasts.
Instead, he returned to where the Incense Dao cultivators were imprisoned.
He picked out a fourth-tier Incense Dao cultivator and, without wasting words, directly beguiled the cultivator with Yin Spirit Power.
A good while later.
Wang Ba set the Incense Dao cultivator down, his brows furrowing slightly.
"So this is how these Evil Gods obtain Incense..."
The Evil Gods' method of obtaining Incense was simple and brutal: they cast illusions directly on mortals and forcibly squeezed out their power of wishes.
The price was that, after too many extractions, mortals could hardly endure it and died suddenly.
This was the method most Evil Gods used.
Although it allowed little repeated use, it was almost their only choice if they wanted to grow quickly enough to escape the threat of Great Yan and Great Jin.
Thus, they needed vast populations and constant expansion.
Beyond this, of course, there was also a more orthodox approach.
That was to spread their faith.
But this approach took time and effort, so there was another, simpler method.
That was to answer every prayer.
They kept mortals under their care, and as long as those mortals believed devoutly and offered Incense, they received the Evil Gods' protection.