Anyone.

When Ailsa thought about it, Mortal Qi was quite amazing. It was able to take the weakest of creatures and lay a foundation that could allow them to climb to the highest of peaks. It was calm and gentle enough to not kill such fragile individuals, but strong and sturdy enough that to be that base that supported a skyscraper. 

This was something that Ailsa had always subconsciously known, but not something she consciously acknowledged until right this moment. 

Was Mortal Qi truly just some lesser, inferior qi? Or did it have secrets no one quite understood? 

It was easy to dismiss Mortal Qi in this way. After all, one had to remember that the lowest grades of qi in existence, those of the Common and Black Grade, only had Mortal Qi forms. It was easy to take this information and conclude that Mortal Qi must be useless, then.