"Protecting Dao Talisman, huh?" muttered Patriarch He, feeling a slight pain in his heart at the prospect of using these things. The Spirit Genesis Sect has a few things that could be considered the ultimate foundation of the sect, and the first one is obviously the Four Symbol Mirror.
As long as the mirror is here, the sect can survive any trial, tribulation, or catastrophe. Another ultimate foundation of the Spirit Genesis Sect is the Protecting Dao Talismans, derived from the Four Symbol Mirror.
Their ancestor found a way to condense the Empyrean Power from the artifact into a talisman. The power of this talisman is more mobile than the mirror as they do not require a long time to activate. The only downside to these talismans is it's hard to control their powers, and even one thing requires an extremely long time to condense.
A Great Emperor can use their Dao to accelerate the process, and Eternals can condense two talismans during their stay in the lower dimension.
