Deception was hiding inside a bush. Let alone with this fog, even without the fog, he was completely hidden. The camera zoomed in on Deception's hiding spot, but it still took a lot of effort for the viewers to find him inside the bush.
This type of hiding spot was somewhat deceiving. If you didn't look carefully at that exact spot, it would be easy to miss it. However, the system summons could not be deceived in this way. If even a single strand of Deception's clothing stuck out from the bush, the summons would find him.
Last time, Mo Fan was able to escape from a map-wide search by an army of summons. He clearly understood that the system AI was far better than real players in this aspect. He had intended to sneak attack Eight Notes by hiding in this bush, but seeing that Eight Notes still wasn't here yet, he knew that for the summons, his current hiding spot was the same as no hiding spot. As a result, he immediately came out from the bush.