Park Sung-ho and the other two were aware of Innate Vital Energy, but how powerful it truly was, they had no idea. To them, Innate Vital Energy was merely a special kind of True Qi, differing only in essence from their own, but presumably similar in practicality.
So even though they considered Xu Shanshan to be strong, they only thought she was about the same level as themselves, if not slightly weaker.
But watching Xu Shanshan's exchange with Wu Chang shattered that notion instantly. Even if Wu Chang was holding back, not daring to use any lethal moves, with his strength, he could effortlessly defeat them within ten or so moves. Yet, after engaging with Xu Shanshan for over twenty moves, he hadn't only failed to beat her, but it seemed he didn't even have the upper hand.
