The life force contained within the flesh wall is evidently a more mysterious form. Compared to normal life force, it's like the difference between water and ice. Although fundamentally the same, the life force in the flesh wall is much more refined and exquisite.
This might be why it can quickly multiply and repair the flesh wall.
An insect hive, as such an entity, inherently stores a vast amount of life force. This is the energy source for the insect race's incubation; every insect hive contains a vitality core.
Now, this life force is so refined and exquisite, naturally making it difficult to handle.
Lu Ye isn't sure what exactly the sect master and the others are facing, but judging from the changes in the flesh wall, their opponents likely possess such characteristics. Otherwise, the top practitioners of the Nine Provinces wouldn't be in such a predicament.
If he can deplete this life force, it could alleviate some pressure for the sect master and the others.