C722 I Don't Know Anything.

Ding Yu nodded and continued to ask, "Then, did you see any strange people outside after you went in?"

The cleaner shook her head and said, "No, there was nothing strange. Everything was normal."

"What about the sound? Did you hear anything after you went in?"

The cleaner still shook her head and said, "No."

...

On Xiao Chennai's side, he had already arrived at the basement