Zheng Yichen observed the mutant creature that hadn't gone mad from the lure's scent and nodded, confirming Tia was correct. Whether a creature lured by the bait would go mad depended on the target; this hippo-like creature hadn't gone mad.
He had chosen mutated creatures that weren't very large, precisely because he considered that Alien Phenomenon creatures might not be very big. Mutants that were too large probably wouldn't be taken down in one go.
Now it didn't matter.
This 'hippo's' mouth was very big, and it swallowed the mutant creature with decisive ease.
Zheng Yichen did not immediately leave, but continued to conceal his presence and wait. To properly store the venom, he used his black spear, which was highly resistant to the corrosive effects of venom. Over time, it could be damaged, but as long as it was thick enough, it would last longer.