After all, the Heaven Realm was too vast. There were trillions of living creatures in the 3,000 prefectures. There were simply countless of them. Even if the big shots had spies, it was impossible for them to know everyone's situation like the back of their hands.
In the end, there were still many geniuses who did not come from illustrious backgrounds, or those who came from remote prefectures were not in the Heavenly Court's network.
When they grew up, coming to participate in the Talent Evaluation Ceremony was the time to pick up scraps. This was also one of the important reasons the Heavenly Court held the Talent Evaluation Ceremony.
If it was not so, they only needed to recruit those geniuses who had shown their talent early on into the Heavenly Court.