Lu Sheng and the others found the fifth floor from the first floor, but they didn't even see their own figures.

"Where is the person?" Zhang Xiaojuan knocked on the wall in confusion a few times, "Is there anyone?"

All that was answered was the empty echo.

"There is not a single person, how can we find the radiation source?" Sun Tiantian touched the table, and a thick layer of gray was stained on her fingertips.

"It feels like no one has used a table for at least a few days."

Xu Yi took out the detector and said, "First check the radiation index to see if he could find the location of the radiation source."

As soon as the machine was turned on, the prompt sound of Didi kept ringing.

Xu Yi held the detector and walked around the first floor lobby, and finally stopped beside Sun Tiantian.

"Damn it, if you get to Tiantian's side, you will get bigger?" Zhang Xiaojuan raised her head in surprise.

"Ah?" Sun Tiantian subconsciously touched her forehead, "Don't I feel uncomfortable?"

Lu Sheng's eyes cold, and he immediately pulled Sun Tiantian to his side and fumbled carefully from head to toe.

"Is this your thing?"

She asked seriously, pinching the metal keychain that she had taken out of Sun Tiantian's pocket.

Xiao Yu glanced at it and shook his head, "How is it possible that little things like Tiantian are all fancy, how can they be so simple?"

Lu Sheng put the metal keychain on the detector, and the numbers on the display immediately soared!

"Where did you come from this thing?" Lu Sheng asked with a frown.

"I...I don't know...I haven't seen this thing before." Sun Tiantian was confused and flipped it in her pocket twice. "We have been together all the way, and I have never contacted anyone else."

"No! Those kids just now!"
Chapter completed!