After buying it, the whole family must live in it during the Chinese New Year, and no one else can live in it. As long as you usually live in a supermarket with yourself, you must live in it together.
Second, burn the yin deed, which means telling the landlord that the old man who died before, now that the house has changed owners, don't scare people again.
These are our rules here, not whether they are the same for you. I come from Guangdong.