Even with Gu Wenshan's cultivation at the First Layer of the Essence Pill Realm, he could easily destroy anyone at the Meridian Passage Realm, yet he dared not casually attack a top-tier Fifth Grade Pill Master like Du Xiu.
The influence of a Pill Master is truly terrifying, especially one of Du Xiu's caliber as a Fifth Grade Alchemy Master.
One could say that with just a word, countless powerhouses in the entire Black Luo Kingdom would heed his call.
Moreover, even the Sovereign holds Du Xiu, this top-tier Fifth Grade Alchemy Master, in high regard, treating him as an honored guest.
Even if Gu Wenshan doesn't care about those powerhouses, he must consider the Sovereign who controls the whole Black Luo Kingdom.
Now, with Du Xiu admitting defeat in alchemy to the young man no more than twenty years old in front of him, how could he not be shocked?
Doesn't this mean that the Su Family has two top-tier Fifth Grade Alchemy Masters in their ranks?
