It's not that he wasn't anxious, he just didn't dare to be, fearing he might frighten Zhou Hai.
The factors with newcomers are too uncontrollable, which is why he initially chose not to bring Zhou Hai along. If Zhou Hai got scared and refused to open the door no matter what, that would leave him helpless.
But what Zhang Jianjun didn't expect was that no matter how he knocked, there was no sound from inside the room.
Meanwhile, that cold and eerie feeling was closing in, he stretched his head out, looked down through the crack between the floors, and saw the sensor light on the floor below, maybe the second floor, flickering eerily and then suddenly going out.
This scene rang alarm bells for Zhang Jianjun, he couldn't hold his composure anymore, and started pounding the door hard, shouting, "Zhou Hai, it's Zhang Jianjun, come out quickly, Chu Xi and the others have found the way out, run quickly!"
