"And this will make the advancement cost of this Green Light Gu to the Green Light Formation Gu extremely low, and there is no need for the Chenfeng Stone."
Fang Yuan listened to the system's instructions, and he naturally understood what it meant.
No matter what its motive was, if he could obtain the simple method to advance the Green Light Gu to the Green Light Formation Gu, it would be of great benefit to both himself and the Gu Immortal Sect.
It was a pity that the Gu Immortal Sect did not have the seeds to produce Green Light Gu worms.
It seemed that he could only wait until his level was higher before thinking about it. It was said that high level Gu masters had their own world inside their bodies. They had completely transcended the realm of mortals and turned into immortals!
They created a space in their lower acupoints, and according to the size of the space they created, they divided it into nine levels.
