Within this one Shichen (2 hours) at the Freedom Building, Master Helen thought that anyone on all three floors could be the "Mountain Infant".
But then Charlotte appeared...
Commander of Horizon examined Charlotte's image that he had cut out from the innkeeper's memory. After staring at it for a long time, he discarded his emotions and entered the state of "Commander of the Horizon Bureau".
He needs to be impartial!
Charlotte belongs to Immortal King Jason. Deep down, Commander of Horizon was inclined to believe that Immortal King Jason had no idea about it, and reasonably deduced that Immortal King Jason was merely Charlotte's cover, with Jason himself likely unaware of Charlotte's true identity.
However, in this state, Commander of Horizon needed evidence to back up any conclusions he made.