When there are more people coming in and out, there will be more people and prosperity.
Don't quadrangles in old Beijing all walk through the same door?
Therefore, from the taboo of geomantic omen, it is not wrong for brothers to take a door.
As for whether the two families can get along well, it depends on how you get along.
Good words, no doubt,
Understand each other and live in peace.
You respect me, increase harmony,
Be polite to your sister-in-law when things go wrong.