Confinement (thanks to the leader of the benevolent bear diting)

"There was nothing wrong with the surveillance footage from this morning. I thought that since the other party had their eyes on him, it must have been premeditated. So, I looked at the surveillance footage from a few days ago and unexpectedly found a strange place. I think this could be a clue. You can receive it in your email. I'll edit the video and send it over."

The call was not hung up. Lee Yuan Fang opened her email. There were three videos in it. She clicked on the video and the content was the same. They were all videos of her foster parents at the entrance of their neighborhood. They were only five seconds long.

The time should be in the morning. In the video, the adoptive father walked to the entrance of the community, stopped, looked to the right for a moment, and then left.

Five seconds passed.