I clenched my fist tightly, hoping that my speculation was correct.

Five minutes passed, and the owner of 502 was not removed from the group chat, nor was she erased.

Owner of 403: [What's going on? Why isn't Granny 502 dead?]

"Do you really want me dead?"

The owner of 502 replied with a voice message.

[Granny, you misunderstood. I'm just worried about you.]

"Hmph, I won't argue with you this time."

I guessed right. One of the seven rules was false, but it wasn't the fifth one; it was the fourth one.

In other words, the rule that there are no children in this building is true, and the rule that owners cannot go out after dark is false.

Also, the sixth rule states that owners can go out during the day to search for pets, not that they can't do it at night.

So, the owner of 502 didn't break any rules by going out at night to search for her pet.

The other owners in the group also realized this.

Owner 202: [By risking her life, the owner of 502 proved that the fifth rule is false, which means that the supposedly erased owner 103 is lying; he never had a child.]

Owner 403: [Then what about the chilling cries of the child?]

Owner 202: [We should ask owner 101 about that. Didn't he claim to have seen the child? Could he also be lying?]

Owner 101, who hadn't spoken much, replied.

[I didn't lie. I saw that child when they moved in two months ago.]

Owner 403: [Two months ago, could it be...]

Owner 101: [Owner 403, be cautious with your words. Some things shouldn't be said lightly.]