The bloodline optimization required was in fact to advance the strength of the Demon Insect.
Just as a low-level Demon Beast once evolved into a mid-level Demon Beast, its bloodline was naturally optimized.
However, the advancement of Demon Insects is somewhat different from that of Demon Beasts.
Especially for Demon Insects like bees and ants, because of the presence of the Bee King and Ant Queen, the ordinary Demon Insects within their colonies inherently have incomplete bloodlines.
Within a swarm of bees or ants, there will never be another Demon Insect that is stronger than the Bee King or Ant Queen, nor will there be another Demon Insect whose evolution is more advanced than that of the Bee King or Ant Queen.
Therefore, to optimize the bloodline of such Demon Insects, one only needs to enhance the strength of the Bee King or Ant Queen within them and facilitate their advancement.