A greater challenge.
Wu Wang never quite understood what Zhong was talking about. But he had conceptualized at an early stage that the challenge might be impossible to meet, even with all his effort. This instinctively made Wu Wang somewhat resistant to the secret.
On the other hand, Zhong always avoided his tragedy, prodded things in a good direction, and patiently reminded Wu Wang of aspects he both had and hadn't considered. In fact, Zhong's abilities were quite excessive.
Retrospection in time and space.
Suppression of the timeline.
Reversing against the flow of time.
Any of these alone were treasures beyond the understanding of supreme beings like Emperor Shun, the Candle Dragon, and the Third God King. But even with such treasures, and himself at a point on the timeline who had reached the end of time and space and created them, Wu Wang still had to resort to such 'cheating' methods to seek more chances of winning.
