The list of Spirit Beasts given by Youshen to Diwan consisted of three tiers.
The first tier contained the targets Youshen deemed most ideal. If any of these were encountered, it would not matter even if their age was slightly lower. The moment Diwan found one, he would notify Youshen immediately so Youshen could determine the exact age.
The second tier represented exceptionally good choices. Such compatibility and Spirit Beast quality would basically be considered a flawless target for an ordinary Spirit Master. It was only because Youshen had more discerning standards that he placed them in the second tier.
Chapter 32