Exam End

The lack of other challengers wasn't surprising at all. It would've aroused Cain and Amber's suspicions if people could come within even 30 minutes. They would suspect them of genuinely cheating. 

Even the duo, with master-level attainment in both the Heaven and Earth and the Source Law path, this test still put an immense strain on their Spiritual Sea.

For a moment, the duo even thought they would fail. 

All of this wasn't even mentioning the fact that their powerful soul space played a pivotal part in resisting the voice pressure and counteracting the strain on their soul energy. 

When thinking about it further, Cain found it impossible for any youths to even cheat on this test. There was too much suppression in place that would negate all cheating items. 

Moreover, the price of cheating would most likely be utterly terrifying when considering it is a Holy Land they're trying to scam.