"Alchemy had become non-upgradable after completion, probably because my Talent Level strength is still too low. Perhaps I can unlock higher levels of Alchemy after advancing to the Third Tier."
Because he knew earlier that the raise in Skill Level was actually due to an increase in Talent Strength, Zhang Yanhang figured that before his Rank Promotion, there might not be any other channels through which he could continue upgrading his Alchemy Level.
When he had just promoted to the Second Tier, Zhang Yanhang had already set up an upgrade plan for the Second Tier part. He planned to first enhance the Death Wave, Supreme Will, and Indestructible Golden Body Skills that he had just gained after reaching the Second Tier, then during this period, based on the specific situation, he would upgrade the Limitless Universe Skill and the Profession Level.
