"This is also a good opportunity for the Array Heart Gu."
Zhou Sui could feel the grand Immortal Array enveloping Fengtong City. After all, to protect this mine vein, the Heavenly Sound Sect had invested a lot. Otherwise, if attacked by enemies, it could cause serious losses.
He sensed that the Array Heart Gu had begun to integrate into this Immortal Array.
It shouldn't take long before it's possible to control this Third order immortal formation.
If successful, he could then return to Qingpu City and master Qingpu City's Fourth order Immortal Array.
In this way, he could elevate the power of the Array Heart Gu to the Twelve-tier realm.
As long as formations exist, the power of the Array Heart Gu can rapidly increase, almost without any bottleneck.
"And then there's the Golden Light Thousand Poison Gu. If it devours these poisons, it might advance to the Eleventh-Order level, becoming a Heavenly Immortal-level Gu Insect, and the poison will be even more potent by then."
