It was not easy for Thieves in Stealth to get into formation. Since they were unable to see one another and even the slightest brush would reveal them, Thieves had to be careful when working in a team. The design of Parallel World was not complex and was actually simpler in certain ways than the other MMOs, but because it was a fully immersive game, plenty of things that they were doing required a certain level of knowledge before they could be properly executed.
There was no need to go into details about how these Thieves achieved this, but what mattered was that none of them had revealed themselves in the process. Instead, it was Gu Xiaoshang who curiously asked Gu Fei, "Where's your spell?"
"My casting time is a bit on the slow side." Just as Gu Fei said this, flames sprouted in a large area before them, revealing five Thieves instantly.