"Doctor, what isn't Level 4?" Qingcao asked a little frightened.

"I don't have time to explain, the gunfire just now is too obvious, it may have alarmed them, go back first, I have a hunch that it must be in the underground parking lot, and you can't go where you pull the door, look for it again, and see if there is an exit that doesn't pass through the parking lot!" Dr. Mader said with a frown.

"Doctor, who the hell are you talking about? Humans or zombies? I asked, a little confused.

"It's a zombie, a real fourth-level zombie! Well, don't ask, now it's all about finding the exit. Dr. Mader stuffed my stomach full of questions with a word, and although I didn't know why I did it, out of trust in Dr. Mader, everyone retreated into the hallway, and it was not until the door to the staircase in the hallway was closed and locked that Dr. Mader was relieved.

"Alright, let's find a viable exit." Dr. Mader turned back to the crowd and said.

This corridor is now almost completely enclosed, and as for the ceiling, the tall Fudo also tried to push it with his hands, but its hardness made Fudo shake his head again and again, it seems that the ceiling is solid, and there is no space for passage.

Since the ceiling is not good, then in this corridor, which does not even have windows, only the indoor duty room in the middle part is left. Originally, on the way here, not many people paid attention to the duty room, but now it has become our last hope.

The store in the duty room is open, the lights are still on, the silence inside is terrifying, it doesn't seem that there are zombies, a few rows of shiny car keys on the wall are still hanging there intact, the desks are neatly placed, and the opened instant noodles on the table have long been dry.

The ghost and the white fox glanced at each other, and after signaling to each other, they cautiously advanced from both sides of the desk, and everyone stood at the door very cooperatively, without making a sound.

After a round of exploration, the two of them found no trace of the zombies, so they beckoned us to come in. But as soon as we had taken a few steps, the ghost suddenly frowned and told us to stop, and the white fox seemed to notice something moving. A subtle sound seemed to come from the innermost wooden door. The ghost and the white fox walked slowly towards the door, and the two of them tacitly stopped on both sides of the door against the wall, and their voices became clearer and clearer. The white fox slowly grasped the doorknob, and then looked at the ghost in front of him as if asking, and the ghost put his finger on the trigger, and nodded to signal that the white fox could act.

The white fox twisted the handle carefully, and after stopping for three seconds, the white fox opened the door, and the ghost quickly raised the gun in his hand the moment he opened the door, aiming the muzzle at the space inside the door.

A disgusting scene came into view, a zombie in a staff uniform was devouring the internal organs of a young corpse, scarlet blood covered the walls of the toilet room, and the zombie who was burying his head in food seemed to notice the movement of opening the door, looking up at the ghost with a gun, and let out a hoarse roar in his throat.

"Don't use a gun!" Dr. Mader shouted hurriedly.

But it turned out to be a step too late, and the loud sound of SL8 sniper firing echoed in the hallway, and the ghost also realized that he had done something extremely stupid.

"I'm sorry." The ghost's usually expressionless face seemed a little unnatural now, but now was not the time for remorse. Although it was unknown why the zombies outside the sliding door did not catch up, now everyone seemed to be able to feel the movement from the other side of the hallway.

"There are ventilation ducts here! Go from here! Dr. Mader shouted, pointing above the wall of the duty room.

Fudo and Xiaotian willingly moved the desk under the entrance of the ventilation duct, I jumped on the table, took down the air duct blinds, and then, regardless of the difference between men and women, directly in the exclamation of Qingcao and Ziluo, I hugged the two of them in turn, and just as I was about to carry Bai Teng up again, she politely refused.

"I'll just do it myself." The reddish white vine climbed up lightly under my somewhat embarrassed gaze. Originally, because I hadn't seen Bai Teng shoot much before, I subconsciously thought that she thought she was a delicate little girl, but later I learned that Bai Teng was actually good, but he was a little timid and didn't dare to face zombies.

"What's the matter, it's cool to take advantage of the area? Do you still want to hug me? The Green Soul looked at me with a smile on her face.

"Wronged! It was purely accidental...... Besides, you're so good, how dare I hug you. I smiled wryly.

"It's good to know, don't underestimate girls! This time, even if the situation is urgent, if there is a ...... next time" The green soul spirit's face suddenly turned and became extremely terrifying. "Cut you."

I suddenly felt a chill in my crotch and could only smile awkwardly.

The Green Soul Spirit ignored my embarrassment, and jumped lightly and easily climbed into the ventilation duct.

"Brother, high! It's really high! How could I not have thought of such a good solution! Haile looked envious.

"You go away!" I climbed up with an unhappy face.