Those humans are now genuinely considering the various stages of Jia Yan's giant mosquito mutation as different entities, and further believing that he is not one being, but rather a vast species similar to the metallic monsters!
Having said that, till now humans are uncertain whether the metallic monsters are mechanical or biological, consequently, there has been no concrete definition for these metallic monsters so far.
However, those scientists who conduct autopsies on the metallic monsters all claim they've made huge discoveries. Some even make claims practically one after the other. One person discovers a specific characteristic in a metallic monster in the morning, and by night, another scientist claims to have discovered the same thing, squabbling over the so-called right to name their discovery!