C330 'A ghost is coming! '

Who couldn't pretend to be that evil spirit? Why did he have to pretend to be Xia Xin? Could it be that he found out that Xia Xin and I are very close and wanted to use Xia Xin's identity to make me panic? But how did he know?

I remember in the morgue, he easily listed us out. He obviously knows us, what is the background of this evil ghost?

Is he an old friend of ours