Lightwing
The title of Virtuous Sky Sage was an honour given by Sky City to top scholars. As long as Magi had achievements in academics and were acknowledged by the Sage Committee, they could be awarded this title.
Not only was it an honour to become a Sage, there were benefits to it as well. Not only could they gain a bonus of two levels to their vitality from the Endowing Scepter, they also had the opportunity to join Sky City themselves. Even if they did not enter, the Monarch of the Skies would still protect them, and they would be able to move around the central continent without obstruction.
Hence, whether it was for the fame, the benefits, or just to make up for their weaknesses in academics, large numbers of scholarly Magi came here every year, which allowed Sky City to gain the good reputation of being the cradle of truth.
Even if he couldn’t pass, just gaining the favour of the Monarch of the Skies and being baptised by the Endowing Scepter once was no big issue.