Zhang Heng figured that his recent actions must have alerted those beings. After all, he had been collecting security footage along the street, and he knew it wasn't something he could hide. Such a move had probably caused them to feel that he was threatening their existence, and thus, hired a group of people to teach Zhang Heng a lesson.
To them, Zhang Heng was nothing more than a high school student. Once the group of thugs taught him a lesson, they expected him to realize reality's cruelty and hoped that he'd give up on what he was doing.
Obviously, they had severely underestimated Zhang Heng and his abilities.
Technically speaking, this was actually a double-blind quest. Zhang Heng had no idea where those creatures originated from, nor did they know his identity as a player. Hence, both parties were still at the stage of testing the waters they were in.
"How much did the person pay you to teach me a lesson?" Zhang Heng looked at the group's leader.