However, he didn't need to worry too much, the situation wasn't completely without a solution.
Zhang Xiaoman possessed a Purple Second Rank skill called "True Spirit Control," which was an upgrade from his previous Soul Absorption Technique.
Its function was to absorb 25% of one's maximum Dark Energy limit and 20% of the target's spiritual power.
This meant Zhang Xiaoman could use this skill to absorb the spiritual power of other Dark Spirits and then augment himself.
In the Dark Energy domain, spiritual power represented the upper limit of Dark Energy, with 1 point of spiritual power equal to 10 points of Dark Energy limit.
Zhang Xiaoman currently had 35 points of spiritual power, thus his Dark Energy limit was increased by an additional 350 points.
So, as long as he found a suitable target, he could temporarily increase his total Dark Energy using this skill.