Before entering the Endless Trial, one must first have their blood drawn to conduct a Blood Age test.
Through the Blood Age test, one's age can be most accurately determined, leaving no room for falsehoods—however, when it comes to contestants as strong as Gu Tong, testing the Blood Age seems rather pointless.
Still, for the vast majority of people, this test is quite authoritative.
Firstly, participants must meet the conditions of the Endless Trial and be under thirty years old, and secondly, if they clear the trial, they will be eligible to be ranked on the leaderboard, which will also accurately display their ages.
Just from this point alone, the leaderboard is quite authoritative; at the very least, there would be no mistakes regarding age.
You must understand, during one's teenage and twenties, missing out on two or three years of age can make a huge difference in cultivation and strength.
