According to records backed by the Central Domain's elites, human dantians didn't have enough space to go over 3,600 Spiritual Drops. But throughout Dongli—no—even in Yanzhou history, no one had ever gotten close to 3,000 drops.
Of course, this only applied to humans. Holy Beast Descendants, Elemental Spirits, Demons, Divine Spirits and so on, all had higher limits or unique cultivation systems that made this cap irrelevant. Should a human being go past the 3,600 cap, the masses' first reflex would be to investigate their race—not praise the achievement.
If you're wondering why the formation contains lethal dangers, the explanation will come next chap. That said, enjoy!