Sects also want to know what his talent is and see if it is compatible with their training system. No matter how strong he is, if he doesn't fit their techniques, they won't be able to train him well. His talent could go to waste in the wrong sect.
Of course, tangible talents are not all that matters in determining the potential of an individual. There are still intangible talents such as intelligence, intuition, fighting instincts, luck, comprehension abilities, and willpower, which also have significant effects on the growth of an individual. That's what the examination itself will test.
All of the data from the registration and the examination will then be collated by the sects and used by them to decide on who they would accept.
He was a little nervous during the tests. But he wasn't scared of the outcome because regardless of the outcome, age and raw power are also very important, and he has those in the bag.