Elder Bai directly stated that they needed fifty Spirit Venerables.
He did not mention those at the Spirit Realm level; after all, in their world, cultivating to the Spirit Realm was extremely difficult, with only a few dozen such individuals existing—namely, the founding ancestors of various families and sects. As for the group of people who had entered the Secret Realm, they could perhaps manage the level of Spirit Venerable, but dreaming of the Spirit Realm was out of the question.
If thirty people at the Spirit Realm were required, that would be truly difficult, as there were currently only three powerhouses at the Spirit Realm inside: Mù Chén and two elders with exceptionally high talent.
Chapter 123