Alex learned the technique he had gotten from the place he had no memories of—the place he believed to be Realm Within Realms. The technique itself took little time to learn, but perfecting it wasn't as simple.
It employed the same fundamental logic of aura resonance to match the aura of your own Qi to that of another object's aura.
In this case, the Blank Canvas Pill was constantly covered in a massive amount of Qi as Alex attempted to match the aura of the pill to his own Qi, just like the other technique had.
While the techniques were similar, Alex immediately saw some fundamental differences that made one better than the other. As for which was which would be up to the person using it.
The technique Alex got from Bai Jingshen would automatically resonate with the aura of the pill, letting him do nothing but directly absorb it. However, the amount that came from that technique was truly pitiful.
