The entire underground space was extremely quiet, so quiet that only the two of them could hear their own footsteps, even though their footsteps were also very light.

They finally made their way down the narrow corridor to the light. It was a large hall, but it was a little messy, as if it had been a fight.

Qin Xiaoyue felt her heart rise. "This place gives me a very sinister feeling."

"Hm!" Be careful, there should be more Gray Men. " Xiao Chen reminded Qin Xiaoyue in a soft voice.

Qin Xiaoyue nodded. The two of them observed the surroundings of the hall. There were three corridors, and on each of the three corridors, there was a room next to the other.

Qin Xiaoyue discovered that this was a place that shielded her spiritual force. She had no way to clearly see the situation in these rooms.

At this moment, Qin Xiaoyue looked at one of the tunnels. She heard some noise coming from there. She didn't know if it was her brother or not, but there was a high chance it was him.

Qin Xiaoyue took the lead and headed towards the tunnel. Xiao Chen followed closely behind her. Qin Xiaoyue paid attention to the front while Xiao Chen followed closely behind her. Since the entire underground space was covered in spiritual energy, they didn't dare to rashly open the door.

He followed the direction of the sound and soon arrived at the door of the room where the sound was coming from. They heard the voices inside.

"Brother Yun, what should we do now?" It was a woman.

"Quiet!" This was Shangguan Yun's voice. Qin Xiaoyue and the others were very familiar with it.

Qin Xiaoyue knocked on the door and heard him ask, "Who is it?"

"Me!" Qin Xiaoyue answered.

The door quickly opened, and Qin Xiaoyue was pulled in by someone. Xiao Chen quickly followed her in.

There was also a light inside the room. There were about ten people crowded together, but Qin Xiaodong and the others were not inside.

"Why are you guys here?" Shangguan Yun asked.

"I heard my brother went on this mission and was a bit worried before coming." Qin Xiaoyue raised her eyebrows and said.

"There are a lot of grey-skinned people here." Shangguan Yun said with a frown.

"You guys hide here, where are my brother and the others?" Qin Xiaoyue asked.

Shangguan Yun shook his head, "It's very strange down there. Because it's too late, we can only hide in this room. The others scattered and avoided it, but there were no sounds of fighting, so there shouldn't be any danger."

"The devil?" Qin Xiaoyue looked at Shangguan Yun.

"It feels like a gray man production base." Shangguan Yun sighed, "This is also the first time I've seen this laboratory. "There aren't many rooms in here, the rest are all filled with gray-skinned men's vats. The military said that they will rest for the night, and they will think of ways to deal with those vats tomorrow."

"There are so many Grey-skinned Barbarians, how dare you all rest here?" Qin Xiaoyue couldn't help praising their courage.

"There are a lot of zombies outside the school. We are already tired from rushing in, so we don't have the energy to deal with the Greyhound." The girl beside Shangguan Yun said.

"Yeah, there are too many zombies in the school." Shangguan Yun nodded.

"Didn't you see the Greyhound when you entered?" Qin Xiaoyue remembered the grey-skinned man they met in the garage.

"No, the grayskin people here still need some time to prepare. Otherwise, we wouldn't be hiding here." Shangguan Yun looked at Xiao Chen and Qin Xiaoyue with a puzzled expression.

"Just now, in the underground parking lot, we met a Greyhound. He's level 4." Qin Xiaoyue curled her lips and said, "Is she really unlucky to be with Xiao Chen?" Why didn't such a large group of people meet the grey-skinned man, and only the two of them did?

Shangguan Yun's expression turned ugly, "There's a grey-skinned man in the garage, then there's a lot of grey-skinned men lurking around in this laboratory. It seems we're doomed."

"Is this room safe?" the girl asked nervously.