Chapter 1586 - 509: Advancing to True Immortal Perfection, The Embryo of the Center of Ten Thousand Realms_4
Thinking of this, Zhou Sui temporarily put aside his curiosity about the Qingyun Sect.
After all, such things were still too distant for him, and it was utterly unnecessary to explore such hidden matters.
"The Gu worms have also improved significantly."
Zhou Sui sensed each Gu worm on his body.
Clearly, as his cultivation improved, the cultivation of every Gu worm on him also saw a substantial increase, each advancing to the Ninth Order Upper Grade level.
It's just a step away from the Tenth Order level.
Among them, the Obsession Gu and Book Worm had reached the Tenth Order Upper Grade level, not far from the Eleventh Order.
The rapid advancement of the Book Worm naturally stemmed from having devoured dozens of Immortal Art Steles over the millennium.
This also contributed to its rapid progress.
If it continues to devour Immortal Art Steles, it might not take long to achieve the Eleventh Order, or even the Twelfth Order.
By then, its power would also see an astonishing increase.
However, for Zhou Sui, the most significant improvement among the Gu worms was the Array Heart Gu, which also reached the Tenth Order Upper Grade level.