"About three or four months." The girl's face turned pale. Every month, there would be one or two incidents that occurred in this school. It was either an expulsion event or a dropout event, or a disappearance event.

"Go back to your room if you're afraid!" Qin Xiaoyue said.

The girl shook her head. She felt that staying in the room was not safe for these people.

Xiao Chen directly used his lightning ability to smash apart the large vat of the grey-skinned man, then he chopped down with his saber. His actions were very crude and bloody, but the blood of the grey-skinned man did not turn black; this meant that it was still in the process of mutation.

"Bang!" Xiao Chen smashed apart the grey-skinned man's head. There was no crystal core in this brain. Weird, why don't we have a crystal core? "

Shangguan Yun and his subordinates weren't idle either. They had also smashed a few experiment vats and beheaded the people inside. Whether they had truly turned into grey skinned men or not, there was no way for them to return to normal.

After taking care of the people in this lab, they went to the next one. The laboratory was a little smaller than the one before, with only two large vats inside. Inside were two grey-skinned men, the two of them infinitely similar in color to the grey-skinned men they had met outside.

"Its eyes are moving!" The girl pointed at one of the vats.

"Deal with it first." Xiao Chen quickly used the lightning to strike at the large vat. Just as it was about to hit it, the grey-skinned man leaped out. Qin Xiaoyue directly used a wood binding technique on it and tied it up.

This time, Xiao Chen did not waste his energy and found a crystal in the grey-skinned man's head. Although it was not comparable to the grey-skinned man they dealt with, it appeared to be at least a Rank 3.

"After these gray-skinned men came out, they were directly rank 3." Xiao Chen said in shock.

At this time, Shangguan Yun and his subordinates had also finished off the other grey-skinned man. This grey-skinned man also had a crystal in his head, which made Shangguan Yun look quite satisfied.

The group continued on their way. Their movements weren't too loud, especially after entering the laboratory. They would close the door in time without alerting anyone else.

After an hour of fighting, they did not encounter a laboratory that was waiting for people. This made Qin Xiaoyue curious. "Shangguan Yun, did you find the room you were in just now or was it arranged by the higher-ups?"

"It was arranged by the higher-ups." Shangguan Yun raised his eyebrows and said, "The military has a map of this laboratory."

Qin Xiaoyue sighed. It seemed that finding big brother wasn't an easy matter.

Another hour went by, and they had almost finished with the twenty-odd magnified vats of the laboratory, but they knew that this was only one corner of it.

Right at this moment, a whistle sounded. Shangguan Yun said, "Everyone, it's time to gather."

"Come on, let's gather." Qin Xiaoyue nodded. She should be able to see her brother at the meeting place, right?

After more than two hours of fighting, both sides had already acquired roughly ten crystal cores.

Inside the hall, there were many people. Finally, Qin Xiaoyue saw her family.

"Dad, mom, bro!" Qin Xiaoyue excitedly ran in front of them.

"Yue Er, why did you come over? Has your rescue mission been completed?" she asked, looking at her daughter.

Qin Xiaoyue nodded. "It's already been completed."

"Why did you guys come here? This place is very dangerous." Qin Xiaodong said with a frown.

"It's just dangerous, not dangerous at all!" Qin Xiaoyue rolled her eyes at her brother. If they weren't here, she wouldn't even have come to invite them.