As Yuan Yaoyao was checking the information on the official website of Mars Building, Su Muyu's expression suddenly turned dull and she said,
"There are people in the building, their Perceiver must have noticed us."
Lu Heng looked back at her and knew she was engaged in a Perception battle with the opponent.
The battle between Perceivers is a war without smoke, where the victorious side gains reconnaissance rights.
However, such Perception battles rarely result in a crushing victory, as it's more common for both sides to maintain control over a certain area of reconnaissance and prevent the opponent from scouting.
The occurrence of a Perception battle means that the opposition has become aware of their presence.
Lu Heng was slightly surprised because Jian Qing had mentioned that they encountered the raiding team of the Creator Organization here three days ago; initially, he thought they would have left, but unexpectedly they encountered them here.