Upon hearing Ye Chenfeng's question, Wu Changnan did not doubt the purpose of his inquiry about the Yinming Sect, casually saying: "Young brother, the Yinming Sect is a Fifth-Rank Sect, and in the Earth Profound Realm, it's considered a first-rate Sect. In fact, the Earth Profound Realm has even more detailed classifications of Sects. Since we're resting anyways, I'll explain them to you in detail!"
From Wu Changnan's account, Ye Chenfeng learned about the rankings of Sects from First-Rank to Ninth-Rank in the Earth Profound Realm. A Ninth-Rank Sect should have at least one master at the peak of the Fifth Heavenly Layer of the Spirit Communication Realm, an Eighth-Rank Sect should have a master in the Ocean Gathering Realm, a Seventh-Rank Sect should have a master in the Divine Thought Realm, a Sixth-Rank Sect should have a master in the Creation Realm, and a Fifth-Rank Sect should have a master in the Reincarnation Realm.