Rules Strange Story: My Family is Not Normal

[Thriller + Reasoning + System]
Strange recovery, strange rules and strange stories invaded all over the world.
As the chosen one, Zhou Bai entered the ghost talk game on behalf of the Great Xia Kingdom. The first ghost story is about a family of four.
[You live with your wife and parents. But remember, there are only three people in your family. ]
[You can trust your wife, unless she takes off the red hairpin.]
[You and your wife have never had a baby, so if you hear a baby crying in the middle of the night, don’t worry about it.]
[Remember, you cannot have sex with your wife.]