The top three consisted of two disciples from the Genius Sect and one from the Inner Hall Sect, giving the Genius Sect a clear advantage. If they drew lots to fight, Lin Xuan would be at a disadvantage no matter what. At best, it would be a draw.
If Lin Xuan had to fight the other Genius Sect disciple first, what chance would he have against Tong Yulong afterward? With his Elemental Power severely depleted, he would be in no condition to fight.
Qingcheng Mansion was certainly unwilling to let such an unfair situation play out. With so many people watching from the stands, any perceived injustice would tarnish the Mansion's reputation.
As for what to do, they would surely have to add another trial. The many Elders were currently discussing what it would entail. This was a completely impromptu decision, so they needed to come up with a different kind of challenge.
