"After the attribute bar upgrades, there should be two more functions."
After some experimentation, Su Lu finally figured out the changes in the attribute bar: "The first one allows me to see the attributes of everything... perhaps there's a prerequisite too, that they have to be in my hand..."
"And the second one is..."
Su Lu's gaze focuses on the [Wandering Mage] profession in his attribute bar, where he noticed an additional '+' sign.
"Similar to the Arcanist, deducing the abilities of the next level profession? But the experience points required for it seem terrifyingly high... even if I exhaust all my experience points now, it wouldn't budge..."
"Aside from that..."
He brings up a screen in which a myriad of professions he had previously acquired appear:
[Master of Alchemy], [Master of Combat], [Dragon Shepherd]...
"It appears these professions can also be upgraded by extrapolating with experience points? But I don't even have a grasp on my own situation..."