High-Grade Postnatal Spiritual Treasures contained twenty-five to thirty-six Postnatal Divine Restrictions.
Supreme-Grade Postnatal Spiritual Treasures contained thirty-seven to forty-seven Postnatal Divine Restrictions.
Top-Tier Postnatal Spiritual Treasures contained forty-eight Postnatal Divine Restrictions, corresponding to the five tiers of Innate Spiritual Treasures.
The power of a Postnatal Spiritual Treasure was not necessarily inferior to that of an Innate Spiritual Treasure. However, without Primordial Imperishable Divine Light, once it suffered damage beyond a certain extent, its power would decline drastically. It could not restore itself, nor could it emit innate Dao resonance to enlighten and guide cultivators in comprehending the Great Dao contained within the treasure.
As for Postnatal Supreme Treasures, they corresponded to Innate Supreme Treasures. However, Postnatal Supreme Treasures generally could not compare to Innate Supreme Treasures, with Acquired Merit Supreme Treasures being the exception.
These Formation Flags possessed boundless power and were extraordinarily profound. Naturally, they were not easy to refine, being several times more difficult to make than ordinary Postnatal Spiritual Treasures of the same tier.
Not only did they require vast amounts of Divine Materials and considerable time and effort, but they also required a certain degree of comprehension in Artifact Refining Dao and Formation Dao. Ordinary Great Firmament Golden Immortals simply could not refine them.
However, for Yuan Jie, Yuan Lun, and Yuan Ling, who had already broken through to the Primordial Golden Immortal realm, this was naturally no problem.
To refine a set of Formation Flags containing one to twelve Postnatal Divine Restrictions, they would need roughly five thousand to twenty thousand years. To refine a set of Middle-Grade Formation Flags containing thirteen to twenty-four Postnatal Divine Restrictions, they would need roughly twenty thousand to seventy or eighty thousand years.
As for Formation Flags containing twenty-five to thirty-six Postnatal Divine Restrictions? They had never refined any