The energy of Ice and Fire Lake is not inexhaustible; it accumulates slowly over time.
Therefore, each time the Holy Heaven Disciples compete, only the top three are allowed to cultivate in Ice and Fire Lake, because its energy is just enough for three disciples at the Nine Tribulations Half Saint level.
Initially, the four Heavenly Lords thought that Huang Xiaolong, a Fourth-stage Supreme, entering Ice and Fire Lake, although able to devour a portion of its energy, would not greatly affect the subsequent top three core disciples cultivating there. But now, it's more than just an insignificant effect.
At this rate, when the next top three core disciples enter Ice and Fire Lake to cultivate, there might not even be scraps to devour.
However, even knowing that the energy of Ice and Fire Lake might soon be entirely devoured by Huang Xiaolong, the four Heavenly Lords have no intention of stopping him.
