Zhou Fan was using the powerful Wang Long to test his own theories and, in doing so, hone his control over his Inner Strength.
But as the test subject, Wang Long was feeling extremely uncomfortable. Not only did Zhou Fan see through his every attack, but he also preempted each one, forcing Wang Long to abandon his own offensive forms and use all his strength just to defend!
In a moment of carelessness, in the blink of an eye, Wang Long found himself completely suppressed by Zhou Fan, forced onto the defensive.
Of course, if it were only that, Wang Long wouldn't be so dejected. He had also discovered that the circulation of his own Inner Strength was silently changing, as if influenced by the very momentum of Zhou Fan's sword.
As a result, Wang Long was unable to put his full power into any of his counterattacks or defenses.
