Who's Pulling on Me?

With the mortician and dollmaker talents and the experience of making hundreds of mannequins, he had faith in his prediction.

This face is eighty percent similar to the face of the child in the notices, but the question is, why is his face here on the wall? Has the child been killed and the body is somehow related to the wall?

Pulling his arms back, Chen Ge stood where he was. The surroundings were quiet; there was no sound and no special smell.

The husband and wife argued that they had lost a son. The child's name was Da Bao, so the missing person notice might be theirs. They've lost their child, but I felt the child's face when going up the stairs. Did the child return to this building after turning into a ghost, or was he killed inside this building? Could the killer be one of the tenants?