The so-called S-level teams are actually a term coined by the player community, mainly derived from the grading agencies on the forums. There are all sorts of player organizations on the forums and some of these specialize in assessing the strength of teams.
For instance, regarding instance groups, they evaluate a team's strength based on various indicators such as progress in the Tower of Pantheons, clearance time, casualty rate, and rankings data. Teams are categorized into five levels, with D being the weakest and S being the top-level. Renowned teams like the Yanhuang Legion, Angel Legion, and Heavenly Group are all S-level teams, and this was Huang Yi's target.
Within half a year, he aimed to elevate all three major teams to S-level status in their respective domains, a task of significant difficulty. However, Huang Yi had confidence in Knight, Sunset, and Overlord, these three individuals.