The three Foundation Establishment Holy Lands were the Fallen Sword Abyss, the Lone Hell Pocket Realm, and the Primordial Spirit Hollow. Once per sixty-year-cycle, they would be simultaneously opened.
Of course, the Spirit Stream Sect wasn’t the only sect qualified to send people into the three Holy Lands. All four of the strongest sects in the cultivation world of the eastern Lower Reaches would send disciples. The Spirit Stream Sect was only one of those four major sects.
The Fallen Sword Abyss was considered the best of the three Holy Lands, with the Lone Hell Pocket Realm being second and the Primordial Spirit Hollow being the third. The reason for the Holy Lands being ranked in that way was that, according to the legends, the Fallen Sword Abyss contained a strand of Heavenstring energy.
These legends had been around for a long time, but on all the occasions in which the Fallen Sword Abyss had been opened, never once had anyone acquired any Heavenstring energy.