Excuse me, did the folk geomantic omen say that the woman's brother was not married and had sex in the woman's house?

Since it is a custom, that is to say, if you have sex in your father-in-law's house, you are an outsider, which will do great harm to your father-in-law's house, such as people's health, unfavorable work and livestock feeding. However, if you worship at your father-in-law's house, that is, you are called into the ancestral sequence, you become a member of your own family. It won't be a problem (since we worship there, we will have a husband and wife room).