They proceeded to open the remaining seven boxes one by one. Inside three of the smaller boxes were three scrolls.
Two scrolls contained cultivation methods and mental techniques, both of which had been practiced by immortals in the Immortal Realm. The techniques were of a high level but were ultimately of no use to them.
The mental technique they cultivated had been obtained by their two masters during their own time in the Path of All Immortals, so seeking new techniques wasn't a priority for them.
The same applied to other sects and factions. Despite not openly discussing it, many had acquired immortal mental techniques during their repeated ventures into the Path of All Immortals.
As for the other scrolls, techniques like Master Lian's Celestial Blade of Annihilation or Tian Wuya's Heaven's Cataclysmic Blade had already been developed by their masters, based on immortal methods. These techniques were not inferior to those of the Immortal Realm.