Some of them have been thoroughly transformed over the long passage of time, and this accounts for the ten percent that could not be purified, these human-headed fangs that have irreversibly morphed into a horrific aspect of the Starlight, beyond redemption by any means.
From this information, Lu Yuanming also learned that the deeper one ventured into the spiral corridors, the greater the number of unpurifiable grotesqueries and horrors, and the fewer that could be saved. In the end, all that remained was to annihilate them entirely, with no possibility of salvation left.
