After a brief conversation with the laboratory staff member who ambushed him and observing his behavior, Ian had already deduced much information.
First, just like the Azure City Laboratory, the Central City Laboratory researchers could also control some Magical Beasts and Phantasms for their own use.
But there were limits, and some powerful Magical Beasts and Phantasms were beyond their control. Therefore, these Spirit Wisdom Institute researchers chose to hide and cooperate with the Phantasms and Magical Beasts to kill those who would approach the laboratory to explore.
Clearly, they had other enemies within the Central Research Laboratory, whether it be individuals from The Grand Duchy or the Phantasms and Magical Beasts themselves, compelling them to adopt such an aggressive defense strategy that they would kill anyone on sight.