In any part of the stellar space, cultivators can cultivate because stellar space energy is omnipresent, yet the efficiency is extremely low.
Just like the Nine Provinces cultivators, who can cultivate anywhere within the Nine Provinces, though very few actually do so. Even Spirit Stream Realm cultivators know to head to the Spirit Stream battlefield...
The cultivation environment of this reef island is better than ordinary stellar space. If a cultivator doesn't have high demands for a cultivation environment, they can totally cultivate here. Naturally, the efficiency is somewhat lacking compared to using spirit jade or consuming elixir pills, but it has the advantage of being a cost-free deal.
But basically, no one does this because it's too unsafe. There's always someone flying back and forth overhead, so who can cultivate in peace? Especially since normal cultivators need to keep their minds focused during cultivation, making it easy to get ambushed.
