This Great Formation is indeed terrifying; even for the likes of Daoist Monarchs, it represents an extreme horror, for those who fall into this formation will be facing not Daoist Monarch Great Emperor Ziwei, but the power of the starry heavens.
One can only imagine how many eons these ancient stars of the Divine Land World have existed, each possessing power greater than that of a True Immortal and even, at times, surpassing the accumulated power of some Daoist Monarchs.
Moreover, over the years, as the Divine Land World has advanced and transformed, it has naturally nourished these ancient stars, pushing their accumulated power to unimaginable levels.
Of course, even with the power of Great Emperor Ziwei, and the newly-formed Celestial Star Array, it is impossible to harness the power of all the ancient stars. Even if he were to reach the Realm of Pei Xuanjing, or even usurp the authority of all the Star Gods, he could not achieve this feat.