He could use his True Intent to fill these empty runes and give them purpose. Though it would be taxing, if instead of consuming his mental stamina it consumed his qi, everything would be fixed.
From there, it was simple.
And if he used the technique he'd learnt earlier where he transformed neutral qi into any other type of qi via the projection of natural intent, he'd be even scarier.
After that, the only missing pieces was the ability to create coherent spells but with his intelligence and Nadia by his side, it didn't take long for him to figure out how.
Though at that moment, Adonis didn't know it, he'd shocked much more people then when Eleanor had unleashed her Sword God qi.
In essence, what the elders of the alchemical guild had just seen was a boy emulate what the first alchemist had only ever done.
Adonis had recreated what The First Alchemist had done to create the Arcane School of Alchemical Practice.