The architectural style of Northeast single-story houses generally faces south with the back to the north, with the worst being east and west-facing houses.

The east house is the main residence for elders, and the west house is for younger family members.
When there are many family members, they often add two rooms on the north side of the east and west houses.
In Northeast China, the typical family structure is usually a single child or two children.
The worst case scenario is brothers or sisters living in the same room.
During the New Year, many relatives gather together to play poker, mahjong, have parties, drink, and socialize in a large shared kang (heated bed).
Men and women usually live in separate east and west houses.
If children in the family don’t like it, they can simply return to their own rooms and live independently.
I grew up in the countryside, and I don’t know a single friend who lives like this. I’ve never even heard of such a situation in my entire county.
For the sake of traffic, you really can make up anything.