'Holy shit…'
His gaze widened and his hands slightly trembled as he understood.
This was a twofold formation with two functions that intertwined to form an artificial third.
It wasn't just a sacrificial formation, it was also a summoning formation.
The two original functions were reliant on the sacrificial arts as one series of sequences used life force to create yin qi while the other used yin qi to create life force to then sacrifice it to the second half of the formation— the summoning.
Usually, when one used a summoning formation, a portal would open up and an enslaved entity would arise and then the portal would close but now, due to the loop of life force and yin qi, this portal would stay open forever—technically.
'Genius…'
From the beginning, Adonis had only been more and more impressed by this alchemist but now, he was left awe stricken.