10 seconds is all I need
Quinn could somewhat sense the different energies around, but it wasn't as accurate as what Leo could do with his ability, nor was it as routine as sensing someone's celestial power when he was a celestial.
Nonetheless, due to his training in Qi, he could sense strong energies and would somewhat know what level the opponent in front of him was at. In a sense, there were many people that had this same sense.
For vampires it was more of a natural instinct they had when sensing power. With this, Quinn could tell that the Demon General in front of him was stronger than the one he had faced before.
'Based on what the system states, there are more than five races, but out of all the demon races, there must be ones that are more powerful. If I can gather the blood of all of them, then my blood aura can increase even more.' Quinn thought.
'The last blood aura evolution gave me quite a boost, and for the next one, it's quite possible that it can make me even stronger.'