Having learned about Feng and how he had cultivated to an 'explosive' breakthrough, Lin Wu was enlightened.
"Looks like the boy was still hiding a secret, a secret that even he didn't know he had." Lin Wu muttered to himself.
With the experience that Feng had gone through, Lin Wu could confirm one thing: Feng's Willpower.
It was strong enough to allow him to withstand the suffering of drowning.
The feeling of drowning was in fact the overload that he was feeling, and his body was feeling. The boy went ahead with absorbing all the elemental spirit Qis in a single bout. This was simply not the way the technique was supposed to be used.
Of course, one was free to absorb or breath in multiple types of elemental spirit Qi at once, but the quantity that Feng did was beyond his limits. It was only a miracle through which he had survived.